guide for maintenance and supervision of transformer oil in service
Related Translations:
维护: safeguard; defend; uphold; keep; maintain; upkeep 短语和例子维护法律面前人人平等的原则 uphold the principle that all men are equal before the law; 维护国家主权 defend state sovereignty; 维护民族尊严 vindicate national
则: Ⅰ名词1.(规范) standard; norm; criterion 短语和例子准则 norm; standard; criterion; 例则 an example; 以身作则 set an example by one's own conduct; set oneself up as an example2.(规则) regulation; rule; law 短语和
