fold line

Through the calculation using the elastic -plastic finite element model (ANSYS program), the numerical simulation of displacements and the maximum principal stresses in the ground during the step-excavation of a double-arch tunnel on the metro back-turning line is performed.

通过ANSYS程序采用弹塑性有限元模型及合理的计算参数,模拟分析地铁站前或站后折返线区间双连拱隧道分步施工过程中围岩体应力场和位移变形状况,以及支护衬砌结构的受力与变形规律。

Through the calculation using the elastic -plastic finite element model(ANSYS program),the numerical sim- ulation of displacements and the maximum principal stresses in the ground during the step-excavation of a double-arch tunnel on the metro back-turning line is performed.

通过 ANSYS 程序采用弹塑性有限元模型及合理的计算参数,模拟分析地铁站前或站后折返线区间双连拱隧道分步施工过程中围岩体应力场和位移变形状况,以及支护衬砌结构的受力与变形规律。

Ohjective: To study the morphological aspects corresponding to the complex electrophysiological signs of dual (multi) -pathway and reentry of the atrioventricular node (AVN) area.

目的：为探讨心传导系房室结区双（多）径路传导、折返等复杂电生理的形态学基础。

The present rock association of the UHP terrane in Dabie-Sulu region, China results from the result of source UHP rocks rebuilt by retrogressive metamorphism, tectonics, anatexis during the exhumation.

大别—苏鲁超高压地体现今的岩石组合是超高压变质岩石经历快速折返过程中各种地质作用叠加改造的最终产物 ,其中拆沉、底侵、构造体制转换是改造的动力 ;退变质作用、构造置换、深熔作用是改造的主要方式 。

Research on Construction Mechanics and Ground Surface Settlement in Turn-Round Track Metro by Tunnelling Machine

地铁折返线段掘进机施工力学及地表沉降研究

Analysis on Safety Protection Distance in Urban Rail Transit Project

城市轨道交通工程折返线的防护距离分析

Research on Construct Technique of No.3 Line Interzone Subway in Guangzhou;

广州市地铁三号线体育西路站折返线隧道施工技术

Returns the straight-line depreciation of an asset for one period

返回某项固定资产的每期线性折旧费

(especially of incident sound or light) bent or sent back.

（尤指附带的声音和光线）折回或返回。

Returns the straight-line depreciation of an asset for a single period

返回一个资产在一个时期中的直线折旧

Changes in AV Node Conduction Curves Following Slow Pathway Ablation in Atrioventricular Nodal Reentrant Tachycardia

房室结折返性心动过速慢径消融后房室结功能曲线变化

Analysis of Reentry Models on the Intermediate Turn-back Stations of Urban Rail Transit

城市轨道交通中间折返站折返模式分析

The Endpiont Evaluation of Radionfrequent Ablation in Patients with Continuous Atrioventricular Node Function Curves of Atrioventricular Node Reentrant Tachycardia;

房室结传导曲线呈连续性的房室结折返性心动过速消融终点的评估

The Value of Adding the Use of CSo-TA Linear Ablation Method to Treat Atrioventricular Nodal Reentrant Tachycardia;

房室结折返性心动过速射频消融术中加用CSo-TA线消融方法的价值分析

"To make a pressed, folded, or wrinkled line in."

使起折痕、折叠或起皱线

Returns or sets the picture displayed for collapsible rows.

返回或设置为可折叠行显示的图片。

A few of the drow thought it would be a good idea to turn back.

有几个卓尔精灵认为应该折返回去。

Returns the sum-of-years' digits depreciation on an asset

返回年限总和法下的资产的折旧数

In blind error when I did persever,

我曾经走入迷途,不知返折,

He resolutely went back to the front.

他毅然决然地重返前线。

GI(Grated Index)

渐变折射线(光纤)

a bar [circle, line] graph

条线图 [圆形图,折线图]