girder和beam的区别?

girder和beam的区别? 在船体结构中,GIRDER 与 LONGITUDINAL有什么区别?还有BEAM 与 FRAME? ray和beam的区别ray和beam的意思都为光线的时候,它们的区别是什么? 贝玲妃sun beam和贝玲妃high beam有什么区别,主要是效果怎么样? bundle beam 是什么区别 NPC和S Beam 是啥东西.区别是啥 girder chassis是什么汽车的什么底盘? Benefit的high beam和moon beam那个好呢?我想买个高光的 希望自然点 beam smile grin有什么区别?beam,smile,grin都有微笑的意思,那么它们之间有什么区别呢? electro beam 是一种什么涂料,和UV紫外线固化有什么区别? JIM BEAM是什么酒?金酒和杜松子酒有什么区别? beam的意思是什么?请问beam 是笑的意思, 英语翻译One such system,called a beam and girder system,is composed of a slab on sup-porting reinforced concrete beams and girders.The beam and girder framework is,in turn,supported by columns.In such a system,the beams and girders are com-monly 英语翻译Rigid Beam .The simplest way — and probably the first used — is to lay a rigid beam across the stream so that its two ends rest on opposite banks .The rigid beam in this type of bridge may be a shaped wooden beam ,a girder of steel or 横臂起重机和动臂起重机区别请问arm crane和 jib crane有什么区别?beam 和grider有什么区别 s beam是干啥用的? hull girder flange 是什么意思 jim beam占边的黑白之分jim beam占边酒黑瓶与白瓶有什么差别