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。
类账
账,簿,管账;簿;
，音;
类帐；普通类帐
类帐；辅助类帐类帐类帐帐户；普通类帐帐户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。
声
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