maintenance-free service meaning in Chinese
免费包修服务
Examples
- All stainless steel construction , tig welding , mass spectrometer leak checking , and extensive vacuum retention testing help to ensure reliable , maintenance - free service
全部采用不锈钢制作, tig焊接,氦谱检漏,以及长时间真空保持试验,从而保证系统的高度可靠性,免维护。