application and care for small power transmitting tubes
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
Example Sentences:
1.
Application and care for small power transmitting tubes 小功率发射管的使用和维护
