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关注：1
2013-05-23 12:21
求翻译：1．用兩層棉布包住磨擦頭﹐施500g力，用於被測產品來回擦拭50次，往返為一次，不能變色，脫鍍及露底材；是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
1．用兩層棉布包住磨擦頭﹐施500g力，用於被測產品來回擦拭50次，往返為一次，不能變色，脫鍍及露底材；
问题补充： |
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2013-05-23 12:21:38
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2013-05-23 12:23:18
A two-tier cotton encase friction, Shi 500 g, for detected products back and forth polished 50 round-trip to one, cannot change color, and voting at the bottom and Lu materials;
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2013-05-23 12:24:58
1. uses two cotton fabrics to wrap up friction ﹐ to execute the 500g strength, uses in measuring the product back and forth cleans 50 times, the round-trip is one time, cannot change color, escapes plates and reveals the inside story the material;
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2013-05-23 12:26:38
1. With two layers of cotton cloth and packing friction head, Shi 500g, wipe back and forth to the measured product 50 times, round trip at a time, not to change color, plating and threadbare material removal;
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2013-05-23 12:28:18
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