Gravity transportation refers to the method that ore from the working face to the stage transportation level completely depends on gravity sliding.

The gravity model explains why

重心随着机翼上的载荷而移动。 A: The center of gravity moves in relation to the loads on the wings. B: Movement of the center of gravity is proportional to the loads on the wings. C: Movement of the center of gravity is proportionally the loads on the wings.

重心随着机翼上的载荷而移动。 A: The center of gravity moves in relation to the loads on the wings. B: Movement of the center of gravity is proportional to the loads on the wings. C: Movement of the center of gravity is proportionally the loads on the wings.

重心随着机翼上的载荷而移动。 A: The center of gravity moves in relation to the loads on the wings. B: Movement of the center of gravity is proportional to the loads on the wings. C: Movement of the center of gravity is proportionally the loads on the wings.

重心随着机翼上的载荷而移动。 A: The center of gravity moves in relation to the loads on the wings. B: Movement of the center of gravity is proportional to the loads on the wings. C: Movement of the center of gravity is proportionally the loads on the wings.

android:gravity="center_horizontal"表示什么意思

Stability is determined by the relationship of the center of gravity and the（）.

下列属性中,用于设置线性布局方向的是()。 A: orientation B: gravity C: layout<br/>gravity D: padding

android:gravity同android:layout_gravity什么区别?