The permanent magnetic separator of the main oil: rolling bearing, roller bearing, all gear, a movable bearing, slidingplane;
永磁除铁器的主要注油处：转动轴承，轧辊轴承，所有齿轮，活动轴承、滑动平面；
2
A formula of active earth pressure on retaining wall was proposed which considers the cohesion force on slidingplane and the adhesive force on interface of soil and retaining wall.
考虑滑裂面上填土的粘聚力及填土与墙背接触面上的粘着力，推得了粘性填土挡墙上的主动土压力计算公式。
3
Calculation shows that the maximum tensile force of soil nailing appears in slidingplane, and the distributing shape of tensile force agrees with corresponding theoretical analysis.