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關注：1
2013-05-23 12:21
求翻譯：to achieve the mass per unit area of the floors, coverings and ceilings as detailed for a Type 1 separating floor as defined in Approved Document E (see Section 1.2.5).是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
to achieve the mass per unit area of the floors, coverings and ceilings as detailed for a Type 1 separating floor as defined in Approved Document E (see Section 1.2.5).
問題補充： |
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