异厚板铝合金搅拌摩擦焊的温度场模拟
ABSTRACTIn this paper,the temperature field distribution of aluminum alloy with differentthickness was studied by ABAQUS finite element software.Several groups ofdifferent welding ...
低频声波定向打击技术发展研究
ABSTRACTABSTRACTAbstract.KEY WORDS:low frequency acoustic wave,Regulation of acoustic wave propagation.non-fatal strike technology,Fluid strong sound source technology
建筑企业减少安全隐患的探讨
height,elevation changes and internal structure has little similarity;the construction process in addition to process changes,material flowis large,construction equipment,protectiv...
OPPO企业实施物流外包影响因素分析（开题）
求的增长和物流服务供应商服务能力的扩充和完善，物流业务外包服务将逐步被社会认识、了解、认可和进一步采用。电子商务发展环境随着市场以及消费者需求变化，企业实施物流外包影响因素也随之变...
发动机典型滑油系统及滑油系统油液监控技术
Analysis of typical aeroengine oil system and lube synthesizedmonitoring technologyABSTRACTAs the 'heart'of aircraft,the aeroengine suffers from many challenges such as highpressur...
金沙江白鹤滩水坝肩墙墙体环境温度应力分析与裂缝控制研究
Abstract工程硕士学位论文AbstractBy means of field research,data acquisition and studying engineering geologicalenvironmental conditions,engineering geological classification for ro...
高年级小学生厌学数学的原因及对策研究——以奎屯市第Y小学为例
43高年级小学生数学厌学数学的外因分析…84.3.1数学学科的特点94.3.2教师94.3.3家长…94.3.4社会.105解决高年级小学生数学厌学数学的对策...........105.1学生层面原因及对策105.2教师层面原因...
佛山式独栋别墅分布式能源系统的设计
AbstractThis paper is about a villa in a certain area of foshan city.It designs a suitable airconditioning system for this villa and provides a comfortable environment for thepeopl...
梅州市某太阳能建筑设计
北京理工大学珠海学院2020届本科生毕业设计诚信承诺书本人郑重承诺：本人承诺呈交的毕业设计《梅州市某太阳能建筑设计》是在指导教师的指导下，独立开展研究取得的成果，文中引用他人的观点和材...
