| 摘要 |
a vacuum vessel (40) for enclosing an output cylinder (8) which opens and closes an outlet (8') of a main body (20); a vacuum vessel (40) having a filter (42) with a number of slits spaced in a specified distance from a vessel wall connected to a vacuum line (4); and an outlet with a crasher (10) and an output valve (43). The preexpander saves the time for ripening(about 24 hours) and reduces the area for installation of the machine.
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