The outside is covered with thick water-proof felt.

外面蒙着一层厚厚的防水毛毡。

This would make the microphone water-proof.

一个防水麦克风就诞生了。

All the cartons are lined with plastic sheets, so they're absolutely water-proof, I can assure you.

所有纸箱都内衬塑料袋，我可以保证绝对防水。

WEISH soft membrane Ceiling is made from PVC, which makes it water-proof, moisture-proof and dust-proof.

WEISH威旭软膜天花为聚氯乙烯材料制成，故防水、防潮、防尘。

The proposed moisture-permeable and water-proof rubberized fabric consists of coating, substrate and textile.

所研制的透湿防水胶布的结构组成为覆盖胶层、底涂胶层和纺织物层。