题目内容
螺纹联接防松的目的是防止螺纹副的相对运动,按工作原理的不同有三种防松方式:摩擦力防松、和永久防松。
查看答案
搜索结果不匹配？点我反馈
更多问题
所有的螺纹联接都需要预紧。
螺纹拧紧后需要防松,目的是在防止螺旋副间再相对转动。
Listen to the following sentences and fill in the blanks.(1)A product title should contain color, size or ______________.(2)Product titles on Amazon are allowed up to _________________.(3)On some cross-border e-commerce platforms, you should avoid putting prices, _____________ symbols and suggestive commentary in the title.(4)The hooded jackets come in various colors and many different _________________.(5) The zip-hoodie is made from 50% cotton and 50% __________________.
VerilogHDL使用的逻辑是（ ）。
微信支付 
支付宝支付