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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。
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。
依恋情感网英汉例句词典收录3870147条英语例句词条，基本涵盖了全部常用英语单词的释义及例句，是英语学习的有利工具。