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工业品级的英文

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"工业品级"怎么读用"工业品级"造句

英文翻译手机手机版

  • commercial grade

例句与用法

  • But during long time , it is very difficult for the exploration and development of sandstone oil layers on the upper part of the fouth member of shahejie formation . it is mainly represented as it ca n ' t be got the optimum production test effect and ca n ' t keep long term rate - maintenance
    该区深层沙四上段砂岩油层的勘探开发一直存在较大的难度,集中体现于不能有效获得最佳试采效果并长期稳产,产量有时在短短几天内可由数十吨降至工业品级之下。
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