Ballast for cruising cabin is with ventilative head in pressure vacuum

The utility model relates to a ballast for cruising cabin is with ventilative head in pressure vacuum, including the body urceolus of cuboid cavity, install the body on the upper and lower bottom surface of body urceolus respectively, body outside terminal surface be the flange face, and the connect...

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Bibliographische Detailangaben
Hauptverfasser: XIAO SIQING, JI JIANBING
Format: Patent
Sprache:chi ; eng
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