the rotor, made of soft steel without an exciting winding, may have two, four or six poles.
用软钢制作而成的转子没有励磁电枢,但有两个,四个或者六个电极。
as an example, the results of soft steel under the ocean corrosive circumstance are compared with that when they are free of corrosion.
还以软钢为例,对其在海洋腐蚀和未腐蚀条件下的结果进行了比较。
this dissertation studies a new theory, and a new mean to diagnose, control, and maintain the crack of the soft steel structures based on fracture mechanics and the background of the application.