The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog.
小横杆按照简支梁进行强度和挠度计算，大横杆在小横杆的上面。
,簿记,
;
计;报;
，总分类；普通分类；辅助分类
；普通分类The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog.
小横杆按照简支梁进行强度和挠度计算，大横杆在小横杆的上面。
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