通过操纵杆对准十字叉丝。

Focus now by means of joystick on the cross hair image.

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两个U形件垂直布置，通过一个简单的十字叉连接在一起。

Here two U-shaped pieces are placed perpendicular to one another and joined with a simple cross.

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u形件称为万向节叉，连接万向节叉的十字叉叫作十字轴，从十字轴延伸出的臂叫作耳轴。

The U-shaped pieces are called yokes. The cross that connects them is called a spider. The arms that extend from the spider are called trunnions.

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