metering plug

例句：

1. 1.The engineer used a measuring plug to ensure the accuracy of his measurements.
   工程师使用一个计量塞子来确保他测量的准确性。
2. 2.The construction crew had to replace the old measuring plug with a new one.
   建筑工人不得不用一个新的计量塞子替换旧的。
3. 3.The plumber used a measuring plug to check the water pressure in the pipes.
   水管工用一个计量塞子检查管道中的水压。