taper-pipe-thread plug-gauge

例句：

1. 1. The engineer used a tapered pipe thread plug gauge to measure the diameter of the pipeline.
   工程师使用缩管螺纹塞规来测量管道的直径。
2. 2. The technician carefully checked the accuracy of the plug-gauge before using it on the machine.
   技术员在用它对机器进行操作之前，仔细检查了塞规的准确性。
3. 3. The manufacturer has introduced a new version of the plug-gauge, which is more precise anduser-friendly.
   制造商推出了一款新的塞规，更加精确且用户友好。