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高速振动筛的结构原理是什么? laws and regulations prohibit employment discrimination是什么意思? 机械图纸关于machining allowance的英文技术要求全文是：Machining allowance to be adopted when turning a surface to be ground is equal to Max value for required dimension with 0.05 mm deviation我的翻译是：当研磨表面时,所要 直线振动筛的结构原理是什么? finish stock 何解? 机械方面的 apply what works for this is issued to serve and what of claims 如果把一个多边形的顶点数增加一倍后,他的内角和是2880,那么原来多边形的顶点数为【 】要写出解题的过程 按照例子,改写句子 例子:I often do homework on the I am doing homework now.要改写的句子：(1)Mike often plays football after school.(2)They usually play chess in the classroom.(3)He often does an experiment at school.(4)The lions often Stealing and robbing are a___ laws. 这句英文是甚么意思?The requested service is temporarily unavailable.It is either overloaded or under maintenance.Please try later. 关于prove的问题The search proved difficult.的意思为什么是“事实上搜寻很困难”prove不是“证明”麽? LOGO是飞机 下边写着spitfire 再下边是chronograph 请问是什么手表品牌? contracting company 是什么 现在完成进行时的语法,不是现在完成时哈! He is too tired to fall asleep.改为同意句 I'll hold I'll hold 1 郑和船队的旗舰是（　）.A、坐船 B、宝船 C、龙船 D、马船 2 神秘的百慕大群岛是（　）的海外自治领地 带香字地名 过去将来完成进行时的句式是什么 过去完成进行时的基本句式是什么? hold后可以跟形容词? 百慕大在哪个国家? GTI是指什么? 求高中英语虚拟证据语法ppt 新闻女主播英文怎么说 现在完成进行时和现在完成时问题问：I have been reading the book in last three months .这句子行吗?如果句子说在去年的某一段时间里自己一直在读这本书能不能用have been doing?问2.I used to eat much roast fo what can colours affect people 翻译 accounts是什么意思 checking accounts是什么意思 accounts payable是什么意思