立式金属罐是大宗液体石油产品的主要计量器具。
Vertical metal tank is one of the main measurement utensil of liquid petroleum products.
页(泥)岩密度计是石油及天然气地质勘探中现场随钻测量页(泥)岩密度的专用计量器具。
Shale (mudstone) densimeter is a special instrument used to measure shale (mudstone) density during drilling in geological exploration for oil and gas.
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