maintenance-free service

常見(jiàn)例句

Maintenance-free design, long service life.
免維護(hù)設(shè)計(jì)，使用壽命長(zhǎng)。
Easily installed - maintenance free- almost unlimited service life - simple - safe - reliable - efficient.
安裝簡(jiǎn)便-免費(fèi)維修-最佳的使用壽命-簡(jiǎn)單-安全-可靠-有效。
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The 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(gè)密封的球面滾子軸承的保護(hù)，以防止顆粒和水分的污染，使他們能夠提供有效的長(zhǎng)期業(yè)績(jī)，幾乎免維修服務(wù)的生命。