hgundas 发表于 2019-11-21 20:56:04

BS EN 772-2:1998 Methods of test for masonry units —



BS EN 772-2:1998
Methods of test for
masonry units —
Part 2: Determination of percentage
area of voids in masonry units
(by paper indentation)

admin 发表于 2019-11-29 11:26:13

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zhzhyun021707 发表于 2023-3-21 10:59:35

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zhzhyun021707 发表于 2023-4-14 17:41:56


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zhzhyun021707 发表于 2023-4-19 07:59:28


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