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1.
康晓书 《中学英语园地(高三版)》2008,(4)
Can you remember how excited you were when the Shenzhou Ⅴ and Shenzhou Ⅵ spacecrafts went into space? And how interesting it was when the Chinese astronauts told us about what they had seen on the trip! Guess what? It's time to get excited again. Shenzhou Ⅶ is just around the corner! Earlier this month, Chinese space scientists announced that Shenzhou Ⅶ will be sent up in 2008. 相似文献
2.
Shenzhou VII spacecraft (航天器;宇宙飞船) was successfull launched at 9:10 p.m. on September 25, the Shenzhou VII spacecraft took off. Shenzhou VII spacecraftwas successfully 相似文献
3.
It’s not only rocket scientists and journalists who are following thecourse of“Shenzhou V”.or“Divine Vessel V”.There are also lexicogra-phers,or dictionary compilers.The flight of the spacecraft last week 相似文献
4.
A Shenzhou 7 will be China’s third manned spaceship. It will carry three taiko- nauts (Chinese astronauts) on a five day space mission(任务) and one of them will carry out the nation’s first spacewalk mission in 2008. It may be launched in October 2008 … 相似文献
5.
After 2 years of preparations, China has successfully launched its second manned spacecraft. On Wednesday morning, Shenzhou 6 blasted off from Northwest China＇s Jiuquan Satellite Launch Center. 相似文献
6.
阅读下列短文。从每题所给的A、B、C、D四个选项中,选出最佳选项。AChina launched(发射)its secondmanned spaceship last week,sending twoastronauts into space.The creation of ShenzhouⅥ,will en-able the Chinese to explore space in thefuture.It will help China build a spacestation or travel to the moon.Its launchopens a new chapter in China’s ambitious(有雄心的)moves to become a global spacepower.ShenzhouⅥlifted off(发射;起飞)on aLong March2F rocket from Jiuquan,GansuProvince.It has undertake… 相似文献
7.
《数理天地(初中版)》2008,(12):49-49
A short walk in space,but a great leap forward for a nation. At 9:07 pm,Sept.25,the ShenzhouⅦspacecraft was lifted off by the Long MarchⅡ-F carrier rocket from China’s northwestern Jiuquan Satellite Launch Center,sending a trio of experienced taikonauts into space.The ShenzhouⅦspace flight is not only considered a 相似文献
8.
Chinacouldsenditssecondmannedspaceship,ShenzhouⅥ,intospacewithinoneortwoyearsinthewakeofthesuccessfulShenzhouⅤmission,seniorofficialssaidyesterday.ButXieMingbao,directoroftheChinamannedspaceengineeringoffice,didnotgivedetailsofthesixthShenzhouspaceship,orhowmanyastronautsitwillcarry.AndtheShenzhouⅥmissionisnotplannedtoinvolvespacewalkinganddocking,saidZhouXiao-fei,directorofthemannedspaceengineeringofficeundertheChinaAerospaceScienceandTechnologyCorporation,whichisresponsibleforthedeve… 相似文献
9.
薄其文 《中学英语园地(高三版)》2006,(3)
A fter its safe landing,ShenzhouⅥhas becom e the pride of the country.Besides expressing congratulations,the C hinese public is expecting m ore successes in the future for the country s space program m e.A t four thirty on the m orning of O ctober17,after5days of travelling in outer space,ShenzhouⅥreturned hom e safely,carrying two C hinese astronauts.Their task follow s thatofthe firstC hinese m an to travel in space,Y ang Liwei.The landing m ade an im m ediate headline news across the … 相似文献
10.
《初中生之友》2008,(Z2)
A Scientists have always wanted to know more about other worlds in space.Man-made spaceships had been sent up into the space.They know many facts about the moon.They know how big and how far away it is.But they want to know more about it. So do Chinese scientists.They are trying their best to study the space. With their hard-working,China doesn't fall behind other countries in the field.In 2003,Shenzhou V spaceship with one astronaut,Yang Liwei,was sent up into the space.This made China well-known in the world.In 2005, 相似文献
11.
China's Shenzhou VII manned space mission, which will include the first spacewalk by a Chinese "taikonaut", is to launch in October, said a spokesman of the China Manned Space Engineering Office on Thursday. 相似文献
12.
1 .The认/o rldwi功out劝ieves 15 a very moving nlm.I_it twiee already.(2005陕西省) A .will see B.see C .saw D.have Seen 2 .Please the TV.It’5 time for the evening news.(2006福建省宁德市) A .turn on B.turn off C .tum down D.turn uP 3 .Oetober 12th was one of_daysin 2005，for Shenzhou Vl was sent uP sueeess-九lly into spaee.(2006福建省莆田市) A .exeiting B.more exeiting C .much exeiting D.the most exeiting 4一My Parents are always striet with me.一Don’t be angry.You’11 understand the… 相似文献
13.
Eva-Guadalupe LIZRRAGA-PAULíN Susana-Patricia MIRANDA-CASTRO Ernesto MORENO-MARTíNEZ Alma-Virginia LARA-SAGAHóN Irineo TORRES-PACHECO 《Journal of Zhejiang University. Science. B》2013,14(2):87-96
Objective:To evaluate the effect of chitosan(CH) and hydrogen peroxide(H2O2) seed coatings and seedling sprinklings on two different maize varieties by measuring their phenology,the H2O2 presence,the catalase(CAT) activity,and the protein quantity.Methods:Seven groups of ten seeds for each maize variety were treated with CH(2%(20 g/L) and 0.2%(2 g/L)) or H2O2(8 mmol/L) by coating,sprinkling,or both.Germination and seedling growth were measured.One month after germination,the presence of H2O2 in seedlings in the coated seed treatments was evaluated.Protein content and CAT activity were determined under all treatments.Results:H2O2 seed coating enhanced the germination rate and increased seedling and stem length in the quality protein maize(QPM) variety.Seedlings had a higher emergence velocity under this treatment in both varieties.CH and H2O2 sprinklings did not have an effect on seedling phenology.Exogenous application of H2O2 promoted an increase of endogenous H2O2.CH and H2O2 seedling sprinkling increased the protein content in both maize varieties,while there was no significant effect on the CAT activity of treated seeds and seedlings.Conclusions:CH and H2O2 enhance some phenological and biochemical features of maize depending on their method of application. 相似文献
14.
《学生之友(小学版)》2006,(Z1)
载人飞船:mannedsPace山iP/gpaeeeraft 载人航天:ma血ed印ace几ght 载人航天计划:二anned spacoprogram 航天飞机:sPace shuttle 无人飞船沁nma血ed spaces吻/s pacecraft 试验太空船:E冲eriment吐SPacecraft 神舟号:Shenzhou归ivine vessel) 运载火箭:ea币er:oeket;roeke:loun 相似文献
15.
载人飞船manned spaceship/spacecraft载人航天manned space flight载人航天计划manned space program航天飞机space shuttle无人飞船unmanned spaceship/spacecraft试验太空船Experimental Spacecraft神舟号Shenzhou(Divine Vessel)多级火箭multistage rocket太空舱capsule返回式卫星recoverable satellite通讯卫星communication satellite遥感卫星remote sensing satellite 相似文献
16.
TiO2 fibers were prepared via alternatively introducing water vapor and Ti precursor carried by N2 to an APCVD （chemical vapor deposition under atmospheric pressure） reactor at ≤200 ℃. Activated carbon fibers （ACFs） were used as templates for deposition and later removed by calcinations. The obtained catalysts were characterized by scanning electron micros- copy （SEM）, transmission electron microscopy （TEM）, Brunauer, Emmett and Teller （BET） and X-ray diffraction （XRD） analysis The pores within TiO2 fibers included micro-range and meso-range, e.g., 7 nm, and the specific surface areas for TiO2 fibers were 141 m^2/g and 148 m^2/g for samples deposited at 100 ℃ and 200℃ （using ACFI700 as template）, respectively. The deposition temperature significantly influenced TiO2 morphology. The special advantages of this technique for preparing porous nano-material include no consumption of organic solvent in the process and easy control of deposition conditions and speeds. 相似文献
17.
Sedum alfredii Hance has been identified as zinc (Zn) and cadmium (Cd) co-hyperaccumulator. In this paper the relationships of Zn or Cd hyperaccumulation to the generation and the role of H2O2 in Sedum alfredii H. were examined, The results show that Zn and Cd contents in the shoots of Sedum alfredii H. treated with 1000 μmol/L Zn2 and/or 200 μmol/L Cd2 increased linearly within 15 d. Contents of total S, glutathione (GSH) and H2O2 in shoots also increased within 15 d, and then decreased. Total S and GSH contents in shoots were higher under Cd2 treatment than under Zn2 treatment. However, reverse trends of H2O2 content in shoots were obtained, in which much higher H2O2 content was observed in Zn2 -treated shoots than in Cd2 -treated shoots. Similarly, the microscopic imaging of H2O2 accumulation in leaves using H2O2 probe technique showed that much higher H2O2 accumulation was observed in the Zn2 -treated leaf than in the Cd2 -treated one. These results suggest that there are different responses in the generation of H2O2 upon exposure to Zn2 and Cd2 for the hyperaccumulator Sedum alfredii H. And this is the first report that the generation of H2O2 may play an important role in Zn hyperaccumulation in the leaves. Oar results also imply that GSH may play an important role in the detoxification of dissociated Zn/Cd and the generation of H2O2. 相似文献
18.
Zhi Huang Zhao-bo Chen Nan-qi Ren Dong-xue Hu Dong-huan Zheng Zhen-peng Zhang 《浙江大学学报(A卷英文版)》2009,10(11):1642-1650
To improve the working and living environment of submarine crews, an integrated system of CO2 removal and O2 regeneration was designed to work under experimental conditions for 50 people in a submarine cabin during prolonged voyages. The integrated system comprises a solid amine water desorption （SAWD） unit for CO2 collection and concentration, a Sabatier reactor for CO2 reduction and a solid polymer electrolyte （SPE） unit for O2 regeneration by electrolysis. The performances of the SAWD-Sabatier-SPE integrated system were investigated. The experimental results from the SAWD unit showed that the average CO2 concentration in the CO2 storage tank was more than 96% and the outlet CO2 concentration was nearly zero in the first 45 min, and less than 1/10 of inlet CO2 after 60 min when input CO2 was 0.5% （1000 L）. About 950 L of CO2 was recovered with a recovery rate of 92%-97%. The output CO2 concentration was less than 0.2%, which showed that the adsorption-desorption performance of this unit was excellent. In the CO2 reduction unit we investigated mainly the start-up and reaction performance of the Sabatier reactor. The start-up time of the Sabatier reactor was 6, 8 and 10 rain when the start-up temperature was 187.3, 179.5 and 168 ℃, respectively. The product water was colorless, transparent, and had a pH of 6.9-7.5, and an electrical conductivity of 80μs/cm. The sum of the concentration of metal ions （Ru^3＋, Al^3＋, Pb^2＋） was 0.028% and that of nonmetal ions （Cl^-, SO4^2-） was 0.05%. In the O2 regeneration unit, the O2 generation rate was 0.48 m^3/d and the quantity was 2400 L, sufficient to meet the submariners＇ basic oxygen demands. These results may be useful as a basis for establishing CO2-1evel limits and O2 regeneration systems in submarines or similar enclosed compartments during prolonged voyages. 相似文献
19.
WANG Xiu-li TU Jiang-ping ZHANG Pei-long ZHAO Xin-bing 《浙江大学学报(A卷英文版)》2007,8(9):1510-1513
Mg-25 wt% Mg2Ni composite was prepared by sintered method,hydrided at 613 K and then ball-milled with 1.5 wt% PdCl2 additive for 51 h. The effects of PdCl2 on the hydriding and dehydriding behavior of Mg-25 wt% Mg2Ni composite were investigated. The absorption and desorption rate of the composite with PdCl2 is fast and the hydrogen storage capacity is more than that of the composite without PdCl2. The maximum hydrogen storage capacity reached 3.48 wt% at 373 K,and 5.05 wt% H at 453 K,respectively. The improvement of sorption and desorption kinetics is attributed to the catalytic effect of PdCl2,and the grain refining and lattice strain introduced by ball milling. 相似文献
20.
Calcium carbide slag, generated in the hydrolysis process of calcium carbide, is an potential carbon capture reagent because its main ingredient is Ca(OH)2. Calcium carbide slag, a by-product of a resin factory was used as carbon capture reagent. The change of pH and electrical conductivity (EC) of the calcium carbide slag slurry with different solid-to-liquid ratios, as well as the capture efficiency and dynamics under different temperatures and flow rates of CO2 were studied. The properties of solid were characterized with XRD, TG-DTA, SEM and FT-IR before and after capturing carbon. The results show that the change of pH and EC were greater with low solid-to-liquid ratio than that with high solid-to-liquid ratio. The analysis of XRD and SEM show that the content of CaCO3 increased significantly, which improved that Ca(OH)2 and free CaO were reacted with CO2. The results of TG-DTA and FT-IR show that the physicochemical properties and microstructure of the slag changed after capturing CO2 because of the increase of CaCO3 content. All the results mentioned above improve the feasibility of utilizing calcium carbide slag to capture CO2 and offer a practical way for carbon emission reduction and disposal of wasted calcium carbide slag. 相似文献