加工中心圆弧铣削精度检验时,出现斜椭圆的主要原因是()。
A.主轴转速波动
B.某一轴进给速度不均匀
C.反向失动量
D.两坐标系统增益不一致
参考答案:D
简述交流中策划信息的步骤。
What he described as a () detail I thought was the most important part of the plan.
A. common
B. plain
C. just
D. mere