They work with remote control devices that change the direction, position and speed of a German-made cutting machine that slices back and forth along a 300-metre-wide coal face.
他们操作的遥控装置可以改变截煤机的方向、位置和速度，这台德国产的截煤机可以沿着一道300米宽的煤面来回进行切割。
The infrared remote control devices are mostly used near distance wireless communication manner due to small volume, low power waste, strong function as well as low cost.
红外线遥控装置具有体积小、功耗低、功能强、成本低等特点，是目前使用广泛的一种近距离无线通信和遥控方式。
The infrared remote control devices are mostly used near distance wireless communication manner due to small volume, low power waste, strong function as well as low cost.
红外线遥控装置具有体积小、功耗低、功能强、成本低等特点，是目前使用广泛的一种近距离无线通信和遥控方式。
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