大家在查： Darvich 内达拉尔夫•齐 terrestrial globe 尔德·霍夫曼 YZ-905 摄制组成员 tglw 翁山耶安•贝德

YZ-1

YZ-1

YZ-1

YZ-1

1

If I look at what happens in the y, z plane in the plane of a blackboard , it will just look like a line that goes downward with slope one.

我们来观察黑板上坐标系的 yz 平面，它就看起来，像一条斜率为 1 且向下延伸的直线。

2

Optimum design of YZ-1 type air-braking system in huge machine of railway maintenance

大型养路机械 YZ-1 型空气制动系统的优化设计

3

Development and Application of Type YZ-1 Bearing Test Bench

YZ-1 型轴承试验台的开发与应用

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