wet end

例句：

1. 1.The engineer carefully inspected the wetting end of the pipeline to ensure it was properly sealed.
   工程师仔细检查了管道的湿端，以确保其密封得当。
2. 2. During the construction phase, it is important to pay attention to the wetting end of the pipe to prevent leaks.
   在施工阶段，注意管道的湿端以防止泄漏是很重要的。
3. 3. Wet end testing is an essential part of the quality control process in the manufacturing industry.
   湿端测试是制造业质量控制过程中的一个重要环节。