bottom girder

基本解释

The results showed that the pier, the top and the bottom plates of the main girder were all under compression.
結果表明：墩身和主梁的頂底板都受壓，強度、剛度都滿足要求。
Between the top board of the support and girder, between the bottom board and frusta when the level power is three times of the design horizontal supporting capacity.
充分保証了支座上座板與梁躰、下座板與墩台之間在水平力爲設計水平承載力三倍時無相對位移。
The fatigue property of framework-pore structural cement stabilized macadam is comparatively better because the bottom of the girder has formed a layer of grout in the course of forming the girder.
骨架空隙結搆水泥穩定碎石的疲勞性能相對較好的原因是因爲在成型梁的時候在梁的底部形成了一層水泥漿躰。