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Experimental test has been done due to realize the characteristics of the behavior of voltage-time in the case of rod-plane air gap of 70mm and 100mm. Impulse voltage has been applied in this regard to find out the voltage at breakdown level, time to breakdown value, time to complete disc...
A similarity analysis is presented of the momentum field of a subsonic, plane air jet over the range of the jet-exit Reynolds number Reh (≡ Ubh/υ where Ub is the area-averaged exit velocity, h the slot height, and υ the kinematic viscosity) = 1500 16 500. In accordance with similar...
The integrated performance of aero space plane/air breathing propulsion system was simulated.Choosing method of main design parameters of turbo and ramjet were described.Based on given design parameters,the engine performance was computed along flight trajectory.An engineering method was used to compute ...
A.At the airport.B.By plane.C.Taking the air.D.On radio and TV.相关知识点: 试题来源: 大学英语四级考试 Model Test Two 解析 D [听力原文]What does "on the air" here mean 信息明示题。文章第二段指出,on the air,in other words,on radio and television,由此可知D正确。
The invention discloses an air-inlet control valve of an engine of an unmanned plane. The air-inlet control valve comprises a valve body shell, wherein a dovetail groove sliding rod is arranged at the center of the bottom end of a supporting plate; the left side and the right side of ...
The phase of reflected waves in air can be tuned by changing the volume of the liquid. A phase shift of a 2π span is obtained. This provides a possibility to freely manipulate the wavefront of the reflected waves. As illustrations, anomalous out-of-plane reflection of acoustic waves and ...
The Seychelles are a group of islands in the Indian Ocean - but what comes into most people’s minds when they think about the name is a tropical paradise, luxurious holidays, excellent diving spots and breathtakingly beautiful nature.
Due to this, effects of interaction of in-plane and out-of-plane loads on seismic performance of masonry infills have received more attention recently. However, most of studies focus only on fully infilled frames, even though openings, such as windows and doors are essential parts of infills...