For unadjustable ones, the exit may be the best choice.This paper also studied the relevant barrier, ways and policies.The last part can be viewed as a case discussion.

而对不可调整升级型衰产业本文则做了建议，并对、方式及顺利政策保进行了论述。

The invention aims to solve problems in the prior compensation pulse generator, such as complicated electrical excitation structure and unadjustable permanent magnet excitation output.

目是解决现有补偿脉冲发电机电励磁结构复杂、永磁励磁输不能调节问题。