文档介绍：actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building underng city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
毕业论文〔设计〕开题报告表
院〔系〕名称
机电工程系
专业名称
机电一体化
年级
11级机电2班
学生
任子祥
学号
2011810508
指导教师
王林林
填表时间： 2014年 3 月24日
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the8
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the3
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
拟选
题目
液压千斤顶
选题依据及研究意义
在实际生产中我们总是会遇到一些将重物如机床、笨重的箱子、井下的轨道等在没有起吊设备的情况下移动或抬起的情况，仅靠人工操作是很难实现的，这时我们就需要用到千斤顶。
千斤顶与我们的生活息息相关，在各行各业如建筑、铁路、汽车维修等部门均得到广泛的应用，因此千斤顶技术的发展将直接或间接影响到这些部门的正常运转和工作，而液压千斤顶又是千斤顶的一种。通过研究液压千斤顶的内部结构、工作原理。使我们对千斤顶有进一步的了解，使我们更加科学合理的应用千斤顶。
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspec