linear induction pump

例句：

1. 1.The path is linear and easy to follow.
   这条路线是直线的，很容易跟随。
2. 2. The data is linearly proportional to the input voltage.
   数据与输入电压成正比例关系。
3. 3.The line of cars is linear across the street.
   汽车线在街道上是直线的。