The device series has been approved as the standard design of CNPC and can be popularized to oilfield in the whole country.
该装置系列已被批准为中国石油天然气总公司的标准设计，可在全国油田推广使用。
The device series has been approved as the standard design of CNPC and can be popularized to oilfield in the whole country.
该装置系列已被批准为中国石油天然气总公司的标准设计，可在全国油田推广使用。
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