proof seal造句

Discussion on technical standard of mine flame proof seal dam
煤矿防爆密闭墙技术标准探讨
Performance requirements and test methods for fire - proof sealing materials
防火封堵材料的性能要求和试验方法
Semicarbazide , can be formed as a by - product of the process used to manufacture soft plastic seals commonly used in twist - off metal lids of glass jars and food bottles . these seals were widely used for more than 20 years , providing a reliable air - tight and tamper - proof seal
氨基脲是生产软封口塑料过程中形成的一种副产品，这种软封口塑料通常用在玻璃罐子或者食物瓶子那种能一拧就开的金属盖子上，已经广泛使用了
It's difficult to find proof seal in a sentence. 用proof seal造句挺难的