Aimed at the performance of coal minemotor-protector, the testing principle is introduced detailedly.
针对煤矿电动机保护器的保护性能，详细介绍了测试原理。
2
According to the practical situation of the minemotor, these formulas are simple, reliable, small quantum of computation and suitable for programming.
这些方法结合矿井实际情况，简单可靠，运算量小，非常适用于微机编程。
3
Separately, Toyota Tsusho Corp., a rare earth importer and affiliate of Toyota Motor Corp., said Friday it will team up with Vietnamese companies to mine rare earths there.