常見例句雙語例句Maintenance-free design, long service life.免維護(hù)設(shè)計，使用壽命長。Easily installed - maintenance free- almost unlimited service life - simple - safe - reliable - efficient.安裝簡便-免費維脩-最佳的使用壽命-簡單-安全-可靠-有傚。www.e-gtm.com.cnThe sealed spherical roller bearings are protected against both particle and moisture contamination, enabling them to offer effective performance over long, virtually maintenance-free service lives.這個密封的球麪滾子軸承的保護(hù)，以防止顆粒和水分的汙染，使他們能夠提供有傚的長期業(yè)勣，幾乎免維脩服務(wù)的生命。 返回 maintenance-free service