Geochemical -gas log unit has put two mature technology geochemical and gas log together.
地化-气测录井仪将地化、气测二种成熟的技术，有机地结合在一起。
He took his log book and some equipment and left in the mobile unit.
他拿着自己的日志簿和一些设备，开着汽车出发了。
He took his log book and some equipment and left in the mobile unit.
他拿着自己的日志簿和一些设备，开着汽车出发了。
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