π形氢键,π-type hydrogen bond,在线英语词典,英文翻译,专业英语

1) π-type hydrogen bond

π形氢键

2) Π circuits

Π形电路

Equivalent transforms of T and Π circuits with independent sources are discussed to expand equivalent transforms of T and Π circuits without independent sources.

本文讨论了含源T形电路和含源Π形电路的等效变换,扩展了T形电路和Π形电路等效变换的内容。

3) П-shaped cross section

Π形截面

To study the shear lag effect in cable-stayed bridge with П-shaped cross section,a parametric analysis using finite element analysis was carried out,in which the parameters,such as prestress,transverse slope of bridge deck and little longitudinal beams were considered.

结果表明:预应力对Π形截面斜拉桥主梁轴向应力的横向分布规律有明显影响,计算中不可忽略预应力束的影响;桥面横坡也是影响Π形截面主梁斜拉桥剪力滞效应的一个重要因素,尤其是对顶板中央处的纵向正应力影响较大;在桥面板沿纵向增设小纵梁是减小剪力滞效应的一种有效方法,对于高度较小的纵梁可以显著改善应力分布。

In order to analyze the shear lag effect of cable-stayed bridge with П-shaped cross section girder,the axial stress distribution of test sections of a newly-built cable-stayed bridge with П-shaped cross section girder was tested by the steel string strain sensors,which were embedded in main girder during construction.

为研究Π形截面斜拉桥主梁的剪力效应,通过在一新建Π形截面斜拉桥主梁中预埋钢弦式传感器,全程跟踪实测了主梁各施工阶段以及成桥状态下各测试截面的轴向应力;建立了该桥的三维实体有限元模型,并将计算结果与实测值进行了对比。

4) network of π shape

π形网络

5) Π type bridge

Π形梁桥

In this paper,an analytical model of multi Π type prestressed concrete bridge for high speed railway is presented,and a method with which the space vibration equations of time dependent train/Π type bridge system has been established.

提出了高速铁路多Π形预应力混凝土梁桥空间振动分析模型及列车－多Π形梁桥时变系统空间振动方程的建立方法，用它可简便分析跨宽比很小的多Π形梁桥与列车系统的空间振动，亦可用于一般单Π形梁桥考虑畸变与翘曲的静、动力分析。

6) Π-shape girder

Π形梁

参考词条

含源π形网络 π形钢筋混凝土梁高频混合参数π形等效电路有利富集区

补充资料：π, π-conjugation

分子式：
CAS号：

性质：单键和双键相互交替排列的共轭体系。最简单的为1,3-丁二烯，而苯分子则是一个具有高度对称结构的闭合共轭体系。除碳碳双键外，碳碳叁键、碳氧双键等，都可组成π,π-共轭。例如：CH₂＝CH—C≡CH；CH₂＝CH—CH＝O。由π,π-共轭引起的使分子内能降低、键长发生平均化等电子效应，称为π,π-共轭效应。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。

首页 \| 翻译 \| 影视 \| 论坛 \| 索引 π形引线脚 π形组合钢梁 π形主梁节段 π形等效电路 π形匹配网络

1) π-type hydrogen bond π形氢键 2) Π circuits Π形电路 1. Equivalent transforms of T and Π circuits with independent sources are discussed to expand equivalent transforms of T and Π circuits without independent sources. 本文讨论了含源T形电路和含源Π形电路的等效变换,扩展了T形电路和Π形电路等效变换的内容。 3) П-shaped cross section Π形截面 1. To study the shear lag effect in cable-stayed bridge with П-shaped cross section,a parametric analysis using finite element analysis was carried out,in which the parameters,such as prestress,transverse slope of bridge deck and little longitudinal beams were considered. 结果表明:预应力对Π形截面斜拉桥主梁轴向应力的横向分布规律有明显影响,计算中不可忽略预应力束的影响;桥面横坡也是影响Π形截面主梁斜拉桥剪力滞效应的一个重要因素,尤其是对顶板中央处的纵向正应力影响较大;在桥面板沿纵向增设小纵梁是减小剪力滞效应的一种有效方法,对于高度较小的纵梁可以显著改善应力分布。 2. In order to analyze the shear lag effect of cable-stayed bridge with П-shaped cross section girder,the axial stress distribution of test sections of a newly-built cable-stayed bridge with П-shaped cross section girder was tested by the steel string strain sensors,which were embedded in main girder during construction. 为研究Π形截面斜拉桥主梁的剪力效应,通过在一新建Π形截面斜拉桥主梁中预埋钢弦式传感器,全程跟踪实测了主梁各施工阶段以及成桥状态下各测试截面的轴向应力;建立了该桥的三维实体有限元模型,并将计算结果与实测值进行了对比。 4) network of π shape π形网络 5) Π type bridge Π形梁桥 1. In this paper,an analytical model of multi Π type prestressed concrete bridge for high speed railway is presented,and a method with which the space vibration equations of time dependent train/Π type bridge system has been established. 提出了高速铁路多Π形预应力混凝土梁桥空间振动分析模型及列车－多Π形梁桥时变系统空间振动方程的建立方法，用它可简便分析跨宽比很小的多Π形梁桥与列车系统的空间振动，亦可用于一般单Π形梁桥考虑畸变与翘曲的静、动力分析。 6) Π-shape girder Π形梁参考词条含源π形网络 π形钢筋混凝土梁高频混合参数π形等效电路有利富集区补充资料：π, π-conjugation 分子式： CAS号：性质：单键和双键相互交替排列的共轭体系。最简单的为1,3-丁二烯，而苯分子则是一个具有高度对称结构的闭合共轭体系。除碳碳双键外，碳碳叁键、碳氧双键等，都可组成π,π-共轭。例如：CH₂＝CH—C≡CH；CH₂＝CH—CH＝O。由π,π-共轭引起的使分子内能降低、键长发生平均化等电子效应，称为π,π-共轭效应。说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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