不透油,不漏油
Oil or water tanks shall have oil tight or watertight manhole covers. 油柜或水柜应该有相应的油密或水密人孔盖.
Firstly, the inner bearing shall be disassembled before disassemble the oil tight support. 而欲拆卸油封支座，则首先必须将内轴承拆卸。
The fittings which cannot be outsourced in domestic markets: such as motors, switches, power wire, silica gel products, oil tight, lubricant. 电机、开关、电源线、硅胶制品、油封、润滑油等国内没有的配件。
He slicks his hair down with oil every day. 他每天搽油把头梳得光溜溜的。
