ridger造句怎么写

2、This article deals with the design of miniature trailing ridger mulcher.

1、This article deals with the design of miniature trailing ridger mulcher, of which the configuration of machine, the design of ridger former, follow-up ridger and lifter were the main design features.

3、To investigate the soil resistance and the active location between the ridger and soil, the test was carried out in the soil bin by the means of orthogonal test.