Particles placed at the top of either slope would fall down to the bottom under the pull of gravity. Particles placed at the bottom of either slope would go nowhere.
在重力的拉动下，放在任何一个斜面顶部的粒子都会滚到底部，而放在底部的粒子会保持不动。
A series of whirling discs arranged into a steep slope carries the lighter goods-mainly paper-upwards but allows heavier ones to fall.
在斜道上，比较轻的——主要为纸张，在一系列转动圆盘的作用下往上走，而重的物体则往下落。
Human disturbance, slope aspect, the density of fall log and stub and rock percent sum up the main habitat characteristic of the forest musk deer.
林麝生境的主要特征表现为人为干扰、坡向、倒木和树桩密度、基底岩石面积比等方面。
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