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少年二三事     
你一言不发地走在我旁边,我转头看你,睫毛在你眼睑下投出一片阴影你的头发有点乱,遮住了半只眼睛。我在想,我们能不能一直这样走下去?到岔路口,你挥挥手消失在暮色里。我可以感觉到:从你方向吹来的风,有恰到好处婚温度。  相似文献   
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1.IntroductionDuringthepastyears,avarietyofsurfacetreatmentshavebeenusedtoincreasecorrosionresistanceofaluminumalloys.SinceHintonandhiscolleaguesfirstreportedthecorrosioninhibitionwithrareearthmetalsaltsforAA7075aluminumalloys[1],muchattentionhasbeenpaidtotheroleofrareearthadditivesintheareaofsurfacetreatmentsofaluminumanditsalloys.However,mostoftheseresearchesfocusedonrareearthconversioncoatingsformedbychemicalconversionmethods[2-8],theapplicationofrareearthmetalsaltsinanodizingofaluminumall…  相似文献   
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天津俗语“搭咯”是一个很富有表现力,又很独特的词。以其丰富的蕴含义是词义相近的普通话或其他词不可替代的。这就是“搭咯”一词能在天津人口语中长期使用的根本原因。  相似文献   
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Juvenile obesity is increasing worldwide. Preventive strategies are warranted. The school-based Children's Health Interventional Trial (the CHILT Project) combines health education and physical activity for children. The effect on obesity and physical performance was studied after four years in 12 primary schools compared with five control schools. Anthropometric data were recorded. Physical performance was measured by a coordination test for children (balancing backwards, one-legged obstacle jumping, lateral jumping, sideways movements) and a 6-min run (endurance). No difference in the prevalence and incidence of overweight and obesity was found between the intervention and control schools before and after the intervention. Remission of overweight was higher in the intervention schools (23.2 vs. 19.2%), but not significant. An increase in coordination related to lateral jumping and balancing backwards was apparent in the intervention schools (30.6, s = 10.8 vs. 26.1, s = 10.8, P = 0.005; 21.8, s = 11.8 vs. 19.4, s = 11.7, P = 0.007), and the increase in endurance performance tended to be higher in intervention schools (100.8, s = 122.7 vs. 92.8, s = 126.0, P = 0.055), adjusted for age, sex, baseline test result, and body mass index at final examination. Therefore, preventive intervention in primary school offers the possibility to improve physical performance in children. The prevalence and incidence of obesity were not affected.  相似文献   
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