However, the compressed air pass the same large area of Laval nozzle in the traditional vacuum ejector all through the working process, so its large shortcoming is high compressed air consumption.
但是，目前传统的射流式真空发生器在工作过程中始终以同一较大的气流流通面积供给压缩空气，存在着空气消耗量大的缺点。
Clearance of ejector pin is used to vent little quantity air or the part may intervene with vent plug and ejector pin.
推杆间隙排气用于排气量不大或者开设排气塞会与推出机构产生干涉的部位。
Thefirst stage is achieved by an air ejector.
设计了一个空气引射器作为第一级稀释装置。
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