不漏的
... 的 4次方是 The fourth power of 2 i ... 不漏的 leak free; leak tight; leak-free; leakless; leakproof; oilproof; staunch; zero-leak 防漏的 leak free; leak proof; leak resistance; leak-free; leaktight; liquid proofing; seal-proof ...
密封材料
密封结构
防漏密封
防漏的,不漏的
fluid-tight