掘进机是煤矿巷道机械化掘进中最重要的设备，目前仍由司机手动操作。
Tunneling machine is the most important device in mechanical tunneling of coal mine roadway, but it is operated by driver with hands.
掘进机是煤矿巷道机械化掘进中最重要的设备，目前仍由司机手动操作。
Tunneling machine is the most important device in mechanical tunneling of coal mine roadway, but it is operated by driver with hands.
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