航空喷气发动机燃烧室中广泛采用叶片涡流器来控制火焰筒的一次空气流量，并建立强回流区。
The blade-type swirlers have been used in many air engine combustors to control the primary airflow of flame tube and establish a strong recirculation zone.
研究了试样的变形和裂纹的形态，并与航空喷气发动机的火焰筒的断裂特征进行了比较，找到了最佳的试样缺口的形状和尺寸。
The specimen deformation and the crack morphology were studied. After comparing with the fracture of flame chamber of aerojet, the most suitable size and shape of specimen notch has been determined.
CAA说，这是设备生产商依据数据提供的临界点；劳斯莱斯，为航空公司生产喷气发动机的欧洲主要制造商，对此未做评论。
That threshold, the CAA says, was provided on the basis of data from equipment-manufacturers; Rolls-Royce, the leading European maker of jet engines for airliners, has made no comment on this.
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