linear grating

例句：

1. 1. The path is linear and easy to follow.
   这条路径是直线的，很容易跟随。
2. 2. The data is linearly proportional to the input power.
   数据与输入功率成正比例关系。
3. 3. The design is linear, making it easy to understand and use.
   设计是直线的，易于理解和使用。