共查询到20条相似文献，搜索用时 125 毫秒
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数控加工可获得精度高、质量稳定的产品，因而在机械制造领域得到了越来越广泛的应用，数控编程是应用数控机床进行零件加工的前提，因而如何合理地编制数控程序成为数控加工的关键，本文从几个方面论述了数控加工编程的技巧。 相似文献
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本文以数控车技能考证一典型工件为例,主要分析了在数控技能考证中对于加工类似结构工件,如何采取合理的编程方法和技巧保证在考试规定时间内高效率、高质量地加工出工件,并且满足考核标准。文中通过图样分析确定了技能考证中工件的加工参数及工艺路线。 相似文献
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通过对壮语农业生产加工工具词汇细微描述,说明壮族对粮食加工与食品加工技术与技巧独特的认识,揭示壮族农业生产加工工具的特点。 相似文献
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文章试图通过对壮语农业生产加工工具词汇的细微描述,说明壮族对粮食加工与食品加工技术与技巧独特的认识,并尝试揭示壮族农业生产加工工具的特点。 相似文献
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梯形螺纹车削加工是车工技能训练的重要内容,在教学过程中要讲透理论,树立规范操作的意识,并注重梯形螺纹车刀的刃磨技巧和车削加工技巧,使学生树立安全意识、质量意识和创新意识,并根据学生的实际情况制订阶段学习目标. 相似文献
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用宏程序指令加工有一定数学规律的零件,在数控加工中应用非常广泛。如何在加工过程中,按照有规律的数学关系和合理的工艺,编制出正确高效的加工程序是非常重要的。该文以典型实例详细介绍宏程序编程的应用和技巧。 相似文献
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Min Wang Alida Anderson Chenxi Cheng Yoonjung Park Jennifer Thomson 《Reading and writing》2008,21(6):627-644
In the present study, we investigated the relationship between general auditory processing, Chinese tone processing, English
phonemic processing and English reading skill in a group of Chinese-English bilingual children with a tonal L1 and Korean-English
counterparts with a non-tonal L1. We found that general auditory processing contributed to variance in English word reading
skill for Chinese children after controlling for Chinese tone and English phoneme deletion skill. English phonemic processing,
on the other hand, explained a significant amount of unique variance in English reading for Korean children after controlling
for general auditory and Chinese tone skill. These findings suggest that Chinese children relied more on general auditory
processing in reading English, whereas Korean children relied more on phonemic skill in reading English. These findings are
discussed in terms of the impact of cross-language differences in bilingual reading acquisition. 相似文献
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Six different measures of orthographic processing (three different letter string choice tasks, two orthographic choice tasks, and a homophone choice task) were administered to thirty-nine children who had also been administered the word recognition subtest of the Metropolitan Achievement Test and a comprehensive battery of tasks assessing phonological processing skill (four measures of phonological sensitivity, nonword repetition, and pseudoword reading). The six orthographic tasks displayed moderate convergence – forming one reasonably coherent factor. Hierarchical regression analyses indicated that a composite measure of orthographic processing skill predicted variance in word recognition after variance accounted for by the phonological processing measures had been partialed out. A measure of print exposure predictedvariance in orthographic processing after the variance in phonologicalprocessing had been partialed out. 相似文献
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关于欺负者的社会认知能力主要有两种理论:社会信息加工理论和冷认知理论.从这两种研究范式得出了欺负者的两种形象:社会技能缺陷儿童和社会技能良好儿童.两种理论的分歧体现在三个方面:对欺负行为及社会能力的界定不一致;两种研究取向所关注的研究指标不同;两种研究取向选取的被试存在差异.未来研究的主要方向是考察不同欺负类型欺负者的社会信息加工特点和心理理论水平,考察社会认知能力良好的欺负者的移情能力及欺负者的道德判断和情绪特点. 相似文献
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Sascha Schroeder 《Journal of Research in Reading》2013,36(2):186-201
Many low‐skill readers have problems with visual word recognition. In particular, low‐skill readers show a substantial nonword reading deficit that is attributed to deficits in sub‐lexical processing. In this study, I examined whether the nonword deficits of German 14‐year‐old low‐skill readers were associated with inefficient use of multi‐letter information. In a lexical‐decision experiment, words and nonwords were presented in standard format and in MiXeD cAsE format which has been shown to be especially disrupting for sub‐lexical processing. When the stimuli were presented in standard format, low‐skill readers showed a substantial nonword reading deficit, that is they were generally slower than high‐skill readers, but had special problems with decoding nonwords. However, when stimuli were presented in MiXeD cAsE, low‐ and high‐skill readers showed equal impairments in nonword processing. This finding indicates that low‐skill readers do not use context‐sensitive multi‐letter rules during phonological assembly in normal reading. 相似文献
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在大学英语教学改革的持续带动下,大学英语听力教学虽然取得了一定成就,但是从整体上说学生的听力水平并没有根本地提高,造成这一困境的因素固然众多,但是对先进理论引入的不足是一个不争的事实。本文主要立足信息加工理论视角,结合当下网络信息技术日益发展的实际,通过对听力理解过程的分析,对大学英语听力教学进行简要探讨。 相似文献
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Third- and fourth-grade Norwegian children completed a battery of tasks that measured indicators of orthographic and phonological processing skill, leisure time reading, home literacy environment, and nonverbal intelligence. Using latent variable structural equation modeling, it was found that home literacy environment influenced leisure time reading, and that leisure time reading contributed to orthographic processing skill beyond the prediction provided by phonological processing skill. Home literacy environment influenced orthographic processing skill indirectly by its influence on leisure time reading. In addition, some children with poor phonological skill and good orthographic skill were found to score high on a leisure time reading measure. Even though Norwegian has much more regular orthography than English, these results are consistent with previous findings in the United States linking variance in orthographic processing skill to differences in leisure time reading. Thus, this study showed the robustness of orthographic skill independent of phonological processing even within the context of an orthographically regular language. 相似文献
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The purpose of this study was to examine the relations of various cognitive abilities and aspects of math performance with computational estimation skill among third graders. Students (n= 315) were assessed on language, nonverbal reasoning, concept formation, processing speed, long‐term memory, working memory, inattentive behavior, basic reading skill, arithmetic number combination skill, double‐digit computation skill, and computational estimation ability. One‐way analysis of variance indicated significant differences in estimation skill among students of low, average, and high math computation performance. The unique predictors of estimation skill were arithmetic number combination skill, nonverbal reasoning, concept formation, working memory, and inattentive behavior. 相似文献
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通过实验组与控制组训练成绩的比较,指出在金属锯削动作技能训练中,动觉训练能促进动作技能的形成,并以此为基础,提出了职业操作技能的动觉训练模式。 相似文献
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＂使用通用机床的零件加工＂是数控技术专业入门阶段的课程.该课程的内容应具有针对性和适用性,应以真实的工作过程为依据序化教学内容,并科学设计学习性工作任务,课程的表现形式分为面向学生的文件和面向教师的文件两部分.教师要通过此课程使学生完成数控技术专业入门知识的学习和基础技能的训练. 相似文献