At present, the research and development of a machinable magnetizer at home and abroad have created a favorable condition for further development of induction heating technology.
It's more practical to use aluminum for aircraft building it's cheap, strong, and machinable while titanium is expensive and isn't easy to get despite being the seventh most common metal on Earth.
进行车削加
刀具磨损特性,
论了影响刀具磨损率
用铝来制造飞机更为实用，因为它便宜、坚固
易于加工， 而钛则昂贵
第七种最常见的金属。
