Introduced a blind lane to exhaust the in common use method and regulation of the gas, exhaust gas a personnel to have value of draw lessons from towards attend.
介绍了盲巷排放瓦斯的常用方法及注意事项,对参加排放瓦斯人员具有借鉴价值。
Introduced a blind lane to exhaust the in common use method and regulation of the gas, exhaust gas a personnel to have value of draw lessons from towards attend.
介绍了盲巷排放瓦斯的常用方法及注意事项,对参加排放瓦斯人员具有借鉴价值。
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