reducers造句怎么写

In this paper, by analysis of temperature and pressure reducers' scale and according to different acids' chemical properties, mixed-acid is effective mostly for cleaning is put forward.

The thrust ball bearings are used in lathe centers, automobile cluthes, reducers and so on.

body for cinematographic enlargers or reducers

If reducers with hard gear surface are applied, it will have long life and high mechanical efficiency.