As the name would suggest, these are parts whose substance are oriented around the concept of a service.
顾名思义，这些部件的本质是面向服务的概念。
2
If You bestow Your divine power, then one attains the factual substance which is service to the spiritual master - and life becomes successful.
您把您的力量赐予谁，谁就可以靠为灵性导师服务得到绝对真理，他的生命就获得了成功。
3
Mineral oil based quenching oil is not a green quenchant because it produces hazardous substance during service and wasted oil is difficult to be degraded.