1、Coating bamboo with a solution of celluloid in acetone does not exert a water proof effect greatly.
用賽璐珞的 * 溶液涂布竹材，其防水效力增加不多。

2、Only the new device is housed in sealed water proof case.
只有這種新裝置才具有密封防水的外殼。

3、It's a 'ring' where I glue water proof polish paper P4000 on.
這是一個(gè)'環(huán)'我膠水防水波蘭文件p 4000上。

water proof翻譯