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关注:1
2013-05-23 12:21
求翻译:holes reveals that the bulk of the drill hole dust (up to 65%) was above 500 micron in size, up to 12.2%是什么意思?![]() ![]() holes reveals that the bulk of the drill hole dust (up to 65%) was above 500 micron in size, up to 12.2%
问题补充: |
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