tool-post ring

例句：

1. 1. The tool-post ring is a crucial part of the construction process.
   工具杆环是施工过程中至关重要的部分。
2. 2.The tool-post ring was designed to improve the efficiency of the machine.
   工具杆环被设计来提高机器的效率。
3. 3. The tool-post ring broke during the heavy lifting, causing some concern among the workers.
   在重举重物的过程中，工具杆环断了，这让工人们感到担忧。