Be familiar with basic principles and methods of metal machining and equip with basis of knowledge of machining process.
熟悉金属机械加工的基本原理与方法,具备机械加工工艺基础知识。
A basic structure along with architectural elements (such as metal facade, Windows etc) were the scene's basis.
基本结构和建筑元素(如金属立面、窗等)才是场景的基础。
On the basis of T551 and T561, a new metal deactivator with high efficiency (copper corrosion inhibitor) have been preparated by Weihua co.
在T551和T561的基础上,研制出新的高效金属减活剂(铜腐蚀抑制剂),解决了高硫极压剂的不足,使铜腐蚀达到1级。
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