bottom couch (roll),lower couch (roll)是什么意思

用法例句

To solve the difficulties of mining the coal seams underlie the-115 main entry without destroying the main entry in the Quangou coal mine,the simulation analysis of surrounding rock movement regularities of the main roadway with the underlie coal seams mined was carried out.

针对泉沟煤矿要采出-115大巷下压煤,同时要保证上部的大巷正常使用的技术难点,进行了下伏煤层开采大巷围岩活动规律的模拟分析。

Effect of upper gas reservoir on gas diffusion from lower gas reservoirs;

上覆气藏对下伏气藏天然气扩散的作用

Experimental Project Practice for Sustainable Development of Chinese Settlements: Remodeling Design for Public Bathhouse in the Xiafutou Village of Henan Province;

中国村落可持续发展试点工程实践——河南省下伏头村公共浴室改造设计

In this paper,taking Xiafutou village as an example,ecological concept of sustainability which was existed in aspects of site choosing,local construction technology and landscape maintenance in Chinese ancient villages was firstly put forward.

本文以河南省下伏头村为例,指出中国古代村落在规划选址、营造技术和绿化景观等方面蕴涵着可持续发展的生态观。