【多选题】加工细长轴时,为了防止工件受径向切削力的作用而产生弯曲变形,常用( )或( )作为辅助支承,以增加工件刚性。
【单选题】The idea that human behavior is governed by a physical component and a non physical (i.e., spiritual) component is referred to as ____________.
【简答题】Non-physical barriers consist of barriers, barriers and barriers.
【判断题】为了增加细长轴的刚性,加工时常采用中心架或跟刀架作辅助支承。
【简答题】his non-physical characteristics
【单选题】有关“二战”前国际人口迁移的变述,正确的是
【单选题】Which of the following is NOT an example of a non-physical fence?
A.
Time or duration of use.
D.
Location of reservation.
【判断题】车削细长轴时,为了防止工件受径向切削力的作用而产生弯曲变形,常用中心架或跟刀架作为辅助支承,以增加工件刚性。
【判断题】为了增加细长工件的刚性,车削时常采用中心架或跟刀架作辅助支承。( )