This technique requires less treatment on the surface of the tube and needlessness of heat treatment to the tube, in addition, there is no need of large machines.
其工艺主要特点:降低了钢管表面处理要求、无需对钢管进行加热处理、无需大型机具。
考纲分布
近18年出现 1 次
重要程度
100%
n 不必要
考纲释义
n. 不必要
英文释义:
真题例句:
It shows the needlessness of government interventions.