soft water proof layer

• 防水层

soft water proof layer的用法和样例：

例句

1. No jointing work in the whole waterproof layer reduced the hidden trouble of leakage and enhanced the waterproof effect.
   整个防水层无接缝施工，减少了渗漏隐患，提高防水效果。
2. Lao Fang of the kitchen and bathroom water-proof layer have fallen into disrepair, anti-leakage effect has been falling.
   老房的卫生间和厨房防水层已经年久失修，防渗漏效果大大下降。