The Duncan-Chang E-B model is used to simulate the non-linear mechanical behavior of soil. With the separation of hydrostatic stress and stress deviator, a partial derivative formulation about displacement and parameter is derived in finite element evaluation.

Three resolutions of the stress Deviator and unified yield criteria

应力偏量的三种分解形式与统一屈服准则

This paper discusses the method of development for developable surface in order to solve the development problem in engineering.

为解决工程实际中的曲面展开问题，以微分几何学中可展面展开的基本原则等相关理论为基础，提出锥面和切线曲面展开的理论方法。

Algorithm for constructing G~ 2 continuous interpolation curve on developable surface

可展曲面上G~2连续的曲线插值方法

Developable Surface Made by Straight Line on Rectifying Place of Space Curve

空间曲线的从切线构成的可展曲面

Development of Developable Surface and Its Application

可展面在平面上的展开及其在工程上的应用

Method of development for developable surface and its application

可展面展开方法及其应用

At present, the research is limited in some special surface as developable surface, the research in free-form surface has no success in theory and method.

目前这方面的研究局限于一些特殊曲面，如可展曲面，对自由曲面则无系统的理论和方法。

A developable surface is one that can be made from a flat sheet without any in-plane strains.

可展曲面是一个可以由平板在不发生任何面内应变的条件下弯成的曲面。

Curves classified by their rectifying developable

曲线按其从可展曲面分类

In order to guarantee the deuteron beam can be smoothly transport to the target, the beam envelope of pulse line was calculated by the Transport and LEADS program.

为保证氘束流能够顺利传输到靶，使用Transport和LEADS两种束流光学程序计算脉冲束线的束流包络图。

A study on detrital minerals in the sediment of the Great Wall Bay

长城湾沉积物中碎屑矿物的初步研究

The Palaeoproterozoic Erdaowa Group distributed in the north Hohhot, Nei Mongol is composed of metamorphic detrital sediment and carbonate with intermidiate basic volcanics.

出露于内蒙古呼和浩特北部的二道洼群，为一套陆源碎屑岩碳酸盐岩夹中基性火山岩变质建造。

The occurrence of fault surface and combination of boundary faults in the steep or gentle slope zones controlled the injecting directions of detrital sediment source.

陡坡带与缓坡带边界断层的断层面产状和断层组合控制着物源注入方向。

THE INDICATION OF CONTINENTAL DETRITAL SEDIMENT TO TECTONIC SETTING A study on detrital minerals in the sediment of the Great Wall Bay

盆地陆源碎屑沉积物对源区构造背景的指示意义长城湾沉积物中碎屑矿物的初步研究

The time comparison between the detrital sediment and the upheaval of mountains around Tarim Basin

晚新生代以来塔里木盆地周缘碎屑沉积物与周缘山系隆起时代对比

The significance of the heavy mineral provinces in horizontal strata correlation, and in indicating sedimentary environment and detrital sediment features and sources are also discussed.

文章还探讨了重矿物组合分区对横向地层对比、沉积环境、碎屑沉积特征和物质来源的意义。

The Latest Development in Flow Units of Detrital Reservoir

碎屑岩储层流动单元研究的新进展

Two reservoir types are detrital reservoir rock and carbonate reservoir rock.

塔东地区储层类型包括碎屑岩和碳酸盐岩两大类。

Introduces the imaging logging interpretation applied in West Sichuan detrital deposit microfacies analysis, terra stress analysis and crack identification.

介绍了成像测井解释在川西碎屑岩沉积微相分析、地层应力分析、裂缝识别中的运用。

About 29 thin sections were used to analysis the detrital and authigenic mineral composition and content.

对29个样品进了薄片分析和鉴定，确定了碎屑颗粒和自生矿物的成分和含量。