转动主动齿轮若干圈以校正轴承滚柱。
Rotate the pinion gear several complete revolutions to align the bearing rollers.
这是与z正轴的夹角。
方向为x正轴方向，在碰撞前，它有一定动量。
Let this be the direction of increasing x, and so before the collision I have a certain amount of momentum.
运用逆向思维，提出基于正轴测投影图的反求研究。
With converse thinking, reverse research based on axonometric projection is brought forward.
文章论述了如何用变换轴测投影的方法求圆球正轴测图的阴影。
In this paper, we acguired a way of seeking shade and shadow of spheric surface in orthographic axonometric projection drawing by means of changing axonometric projection.
根据这两个计算式可以从诸多正轴测投影表达方案中选出最佳表达方案。
According to these two, we can choose and obtain the optimal expressional scheme from various kinds of expressional schemes for the rectangular axonometric projection.
提出了一种基于点与直线关系从正轴测画隐线图建立平面立体线框模型的新方法。
Then we propose a new method of reconstructing three-dimensional models from two-dimensional hidden-part-drawn line drawings.
提出了一种基于点与直线关系从正轴测画隐线图建立平面立体线框模型的新方法。
Then we propose a new method of reconstructing three-dimensional models from two-dimensional hidden-part-drawn line drawings.
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