crankshaft bearing maintenance 曲轴轴承保养
maintenance-free bearing 自润滑轴承 ; 自润滑
maintenance of true bearing 真方位的维持
excessive maintenance of bearing 轴承过维修
Maintenance of radial bearing 径向轴承的检修
maintenance free bearing 自润滑轴承
Bearing maintenance technology are the two complex questions: When the oil and how much oil should be changed.
有关轴承维护技术的两大复杂问题是：什么时候换油和应该换多少油。
Brushless Motor, imported bearing from Europe, smooth running and maintenance free.
无刷电机驱动，欧洲进口轴承，运行平稳，免维护。
Interest-bearing checking accounts at traditional brick-and-mortar Banks often pay only 0.13 percent interest but require high minimums to avoid a monthly maintenance fee.
在传统的银行中，支付利息的支票帐户所允许的帐户只有百分之零点一三，但需要你存入的最低限额却是很高的，这样做是为了避免每月的生活费。
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