起始图 完成图 选取圆柱面 选取圆柱面 （五） 两平面 （ Two Planes ）：此选项用于选取 两平面 后，在 两平面 的交点产生基 轴。若要在 两平面 的交点产生基准轴，可依下图的操作步骤，产生基准轴。
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Integration of two planes 双机一体
angle between two planes 两平面的交角
I only take two planes 我只坐了两次飞机
parallelism between two planes 两平面平行
positional relation of two planes 两平面的位置关系
positional relation between two planes 两平面的位置关系
Two toy planes 数字的运用
The story is told on two planes.
故事由两个层面构成。
我们以两个平面开始。
Five years ago there were only two planes in residence.
5年前，停留在该机库中的飞机只有两架，而如今已有15架。
That means it is easier for planes with only two engines to strike a flock of birds and lose power in both engines.
VOA: special.2009.04.01
Afghan and NATO officials say that Taliban insurgents in the northern Kunduz province were driving two hijacked fuel trucks to an unknown destination when fighter planes located them on a river bank and bombed them.
VOA: standard.2009.09.04
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