pitch diameter of thread

例句：

1. 1. The engineer measured the pitchdiameter of the screw to ensure it waswithin specifications.
   工程师测量了螺丝的线径以确保它符合规格。
2. 2. Thenew machine has a muchsmaller pitch diameter than its predecessor.
   新机器的线径比前一代小得多。
3. 3. The thread diameter is crucialfor the strength and durability of the joints.
   线径对于接头的强度和耐用性至关重要。