This means that not only were they at different altitudes but also their orbits intersected at about a 10-degree Angle. There was no danger of collision.
这意味着他们不但处于不同的高度,轨道也有约10度的交角,没有碰撞的危险。
2
Then, it is indicated that the gearing used presently, while its helix Angle and ratio are both big enough, is in danger of interference.