... 副通气立管secondary vent stack,assistantvent stack 环形通气管loop vent 器具通气管fixture vent ...
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vent loop 孔口圈
loop output signal vent 环式通气管
closed loop with four-vent 四通闭合环
compound closed loop with four-vent 四通复合环网路
·2,447,543篇论文数据，部分数据来源于NoteExpress
This paper presents a new vent loop technology for annular parachutes developed in USA in recent years.
文章介绍了美国近年来研究的降落伞中的一项新技术—圆形降落伞顶孔的孔口圈技术。
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Conventional vent lines are removed and replaced with a vent loop of high strength polymer textile braids.
该项技术去掉顶孔绳，代之以高强编织带孔口圈。
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