坡度线

Indoors model test employing similarity materials and mainly considering V-class surrounding rock is carried out respectively in respect of single track and double track so that the characteristics of ground pressure, structural stress of portal and internal force distribution in various case of slope and dead-weight stress field can be investigated. The main characteristics are as follows:l.

通过室内相似材料模型试验研究，模型试验围岩参数以Ⅴ级为主，分别从单线和双线出发，详细阐述了三种新型洞门型式在正交和斜交情况下，在不同地形坡度和自重应力场作用下围岩压力和洞门结构应力及结构内力分布特征。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。