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Section of vacuum box forms V type and it will not move while filter running.
真空盒断面呈V形,过滤机运行时,真空盒固定不动.
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PUT THE SAMPLES IN VACUUM BOX IN BATCHES , FIX THEM IN THE BRACKET WITH CENTIGRADE METER.
1将试样分批放入真空箱内, 安装在装百分表的支架中.
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