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關(guān)注：1
2013-05-23 12:21
求翻譯：Fineness More than 90% pass through 20 mesh sieve, less than 20% pass through 60 mesh sieve 99% through 20 mesh sieve是什么意思？ 待解決
 懸賞分：1
- 離問題結(jié)束還有
Fineness More than 90% pass through 20 mesh sieve, less than 20% pass through 60 mesh sieve 99% through 20 mesh sieve
問題補充： |
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