waterproof checker

例句：

1. 1.The waterproof checker is used to test the waterproofness of various materials.
   防水检查器用于测试各种材料的防水性能。
2. 2. The waterproof checker can detect any leaks in the waterproof layer.
   防水检查器可以检测到防水层中的任何渗漏。
3. 3. The waterproof checker is an essential tool for construction workers who work in wet environments.
   防水检查器是建筑工人在潮湿环境中工作必备的工具。