A locking device and a reverse counterboring tool bar are designed, their structure and working principle are introduced.
设计了一种锁紧装置和一反锪孔刀杆，介绍了其结构原理。
| 单词 | locking devices |
| 释义 |
locking devices
英语例句库
A locking device and a reverse counterboring tool bar are designed, their structure and working principle are introduced. 设计了一种锁紧装置和一反锪孔刀杆，介绍了其结构原理。
原声例句
VOA Special 2023年4月合集 Schools will be able to use the money on technology including door locking devices, communication systems and video surveillance equipment. 学校可以使用这笔资金购买门锁设备、通信系统和视频监控设备等。 |
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