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关注：1
2013-05-23 12:21
求翻译：请输入您需要翻译的文本！As a rough guide to longitudinal slopes, it is suggested that unpaved drains should not be steeper than 1:50, nor flatter than 1:200.是什么意思？ 待解决
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请输入您需要翻译的文本！As a rough guide to longitudinal slopes, it is suggested that unpaved drains should not be steeper than 1:50, nor flatter than 1:200.
问题补充： |
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2013-05-23 12:21:38
作为一个粗略的指南，纵坡，建议未铺砌的排水沟不应小于1:50陡峭，也不奉承比1:200。
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2013-05-23 12:23:18
A rough guide to As longitudinal slopes, it is suggested that unpaved drains should not be steeper than 1:50, nor flatter than 1:200.
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2013-05-23 12:24:58
As a rough guide to longitudinal slopes, it is suggested that unpaved drains should not be steeper than 1:50, nor flatter than 1:200.
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2013-05-23 12:26:38
As a rough guide to longitudinal slopes, it is suggested that unpaved drains should not be steeper than 1:50, nor flatter than 1:200.
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2013-05-23 12:28:18
正在翻译，请等待...
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