单词	impregnabilities
释义	同impregnability
随便看	sealing of closure sealing off sealing-off sealing oil sealing oil backup pump sealing oil backup pump{=sob} sealing oil ring system with dual oil flow sealing oil ring system with single oil flow sealing oil ring system with triple oil flow sealing oil system sealing on sealing plate sealing pliers sealing plug sealing property sealing ring sealing ring [of a cable gland] sealings sealing screw sealing silk sealing steam system sealing surface sealing system sealing tape sealing test