The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog.
小照简支梁进行强度和挠度计算,大在小上面。
The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog.
小照简支梁进行强度和挠度计算,大在小上面。
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