The vacuum system of the wet end of a papermachine could be a centralized system or some individual systems for the vacuum points.
造纸机湿段真空系统可以
:
真空系统或各真空点独立真空系统。
The vacuum system of the wet end of a papermachine could be a centralized system or some individual systems for the vacuum points.
造纸机湿段真空系统可以:真空系统或各真空点独立真空系统。
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成，部分未经过人工审核，其表达内容亦不代表本软件
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