This paper reviews the development process of WSCER and summarizes its status quo and problems. It further proposes solutions and implementation ways under the requirements of ecological civilization,outlining the prospect of WSCER.林学瑞环境保护部 华南环境科学研究所,广东 广州 510655张茨林...
改进的力学模型是合理的.%This paper reviews and summarizes the research of lateral soil resistance changing in distribu- tion at home and abroad, an improved mechanical model that considers the effects of joints and changing distribution of soil resistant pressure on internal forces and displacements ...