蜗杆传动的总效率包括啮合效率η、()效率和()效率。其中啮合效率η=(),影响蜗杆传 发布时间:2017-06-18 21:06 │ 来源:www.tikuol.com 题型:填空题 问题: 蜗杆传动的总效率包括啮合效率η、()效率和()效率。其中啮合效率η=(),影响蜗杆传动总效率的主要因素是() 效率。
题型:填空题 用方框中所给单词的适当形式填空 save mistakes friend spoken ever 1. I can't understand __________ English.2. I make __________ in grammar.3. Have you __________ studied with a group?4. If you are more __________ to people ,you will have more friends.5. I'm __________ my money so I can buy a new bicycle. 查看答案