该蠕动泵是 由几个滚轮滚动连续不断地压迫弹性软管，将流体按滚轮运动的方向输送。

In the peristaltic pump, a plurality of rollers roll to press an elastic hose continuously, so that liquid is transported in accordance with the movement direction of the rollers.

youdao

您可以在移动鼠标滚轮的同时，通过按ctrl键来放大或者缩小图表。

You can zoom in or out of a diagram by pressing the Ctrl key while moving the mouse wheel.

youdao

按下鼠标右键同时使用鼠标滚轮可以改变移动速度。

With the mouse button held down, you can use the mouse-wheel to change your movement speed.

youdao