米制蜗杆齿根槽宽彤(蜗杆精车刀刀头宽度)的计算式是( )。
A．W=0.697mx
B．W=0.697px
C．W=0.697px
参考答案：A
里坊制
The book is here somewhere, but I couldn't it just now. [ ]
A. put my hands on
B. keep my hand in
C. lay my hand on
D. try my hand at
