该校正装置结构简单、操作方便、造价成本低。
The correcting device has the advantages of simple structure, convenient operation and low manufacturing cost.
该装置结构简单，操作简便，校正效果很好。
This unit is simple with frame with convenient operation and very good rectifying effect.
该装置结构简单，操作简便，校正效果很好。
This unit is simple with frame with convenient operation and very good rectifying effect.
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