maintenance free sealed是什么意思_maintenance free sealed的中文翻译

免维护密封

maintenance free───[化] 不需维修的

sealed───adj.密封的；未知的；v.封闭；盖印（seal的过去分词）

maintenance───n.维护，维修；保持；生活费用

maintenance mode───维护模式

sealed envelope───密封的信封

maintenance costs───维修费用；维护费用；维修费用，养护费用

sealed air───密封空气

sealed container───密闭容器；密封集装箱；密闭集装箱，密封容器，气密封罐

vehicle maintenance───汽车维护，车辆保养

maintenance free SRN high temperature resistant oil immersed transformer, SCB10 and SG10 type dry transformer can be selected for the substation.───变压器可选用全密封免维护SRN耐高温液浸变压器，SCB10, SG10干式变压器等。

These batteries are sealed, maintenance-free components containing substances that are harmful to health and a source of environmental pollution.───该电池为密封的免维护部件，内部装有危害人体健康并可造成环境污染的物质。

Modern excellent gel battery is accompanied by sealed and maintenance-free battery was almost at the same time.───现代优良的胶体蓄电池是伴随着密封免维护蓄电池几乎同时问世的。