名词
中文翻译：矿用计时器同义词
同义词：
['mine timer', 'mine counter', 'mine stopwatch']
例句：
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1. The mine timer is used to measure the time spent underground.
矿用计时器用于测量地下工作时间。
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2. The miner used the mine timer to track his progress.
矿工使用矿用计时器来记录他的进度。
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3. The mine timer was used as a safety device during the mining operation.
在采矿操作期间，矿用计时器被用作安全设备。