The instrument is a powerful arm of developing API standard barite for its convenience and maximum parallel deviation that is less than 0 1%.
该仪器使用方便，最大平行差不超过0 . 1%，是开发符合API标准重晶石的有力武器。
The instrument is a powerful arm of developing API standard barite for its convenience and maximum parallel deviation that is less than 0 1%.
该仪器使用方便，最大平行差不超过0 . 1%，是开发符合API标准重晶石的有力武器。
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