2012-04-02 20:08:44 +0000 2012-04-02 20:08:44 +0000
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在6'跨度的情况下,SPF 2x4转到3.5 "的端头能支撑多少?

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端头是固定的,那么6'跨度的 SPF 2x4转到3.5 “时能支撑多少荷载?

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答案 (0)

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