常見例句A horizontal timber in a scaffold,attached to the uprights and supporting the putlogs. 腳手架上的橫木，橫板腳手架上的一條橫木，附著于直柱之上，支撐腳手架跳板短橫木。A horizontal timber in a scaffold, attached to the uprights and supporting the putlogs. 腳手架上的橫木，橫板腳手架上的一條橫木，附著于直柱之上，支撐腳手架跳板短橫木The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog. 小橫桿按照簡支梁進行強度和撓度計算，大橫桿在小橫桿的上面。The calculation of strength and deflection of ledger is based on the design of every three spans within two strides, and the main rail is over the putlog. 大橫桿按照三跨連續(xù)梁進行強度和撓度計算，大橫桿在小橫桿的上面。putlog (put-lock) 腳手架小橫桿 返回 putlogs