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,管;簿;录，录音;
，总
；普通；辅助户；普通户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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