1) margin of the upper eyelid
目上弦
2) top boom
顶弦,上弦
3) top chord
上弦
1.
Planar BSS with top chords of H-section can be made conveniently,and its joints can be connected easily,but the system is sensitive to the imperfection out of plane because the member of H-section has small stiffness out of plane.
H形截面上弦平面张弦梁结构具有制作方便、便于节点连接的优点,但由于H钢截面构件具有平面外刚度较小的特点,对平面外的缺陷非常敏感,在施工过程中若对此没有采取有效措施,结构会发生平面外失稳,以至无法施工。
4) around beam
上弦梁
1.
Analyzing the influence of the around beam s stiffness on the strength and stiffness of the locomotive body;
上弦梁刚度对机车车体强度和刚度的影响分析
5) wave on dichotomy
弦上波
1.
The paper introduces wave on dichotomy and stationary wave and the difference between them.
本文主要介绍了弦上波与驻波及其之间的差
补充资料：上弦
见月相。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条