音速

Features include: MIDI, ETF, and NIFF file reading and writing; zoom in and out; playback with highlights, instrument change, and tempo control...

功能包括：MIDI， ETF，和NIFF 文件的读写；视图缩放；重点回放，乐器修改，音速控制。。。

Hypersonic aircraft to fly faster secret lies in its use of a ram-jet engine.

高超音速飞机飞得快的奥秘在于其采用了冲压式喷气发动机。

GB/T2624--936 and production in line with ISO5167 - 1 standard expenditure devices, including pressure Kok access standard orifice, the standard nozzle, the flange pressure from the standard orifice, the trail from pressure from the standard orifice, the length of the nozzle And Venturi tube and cultural Venturi nozzle, double orifice, eccentric orifice, missing a round orifice, cone-shaped entrance orifice, the first-orifice, Pitot Venturi tubes, nozzles, such as the speed of sound. OVAL Co., Ltd.

生产符合GB/T2624--936和ISO5167--1的标准节流装置；包括角接取压标准孔板、标准喷嘴、法兰取压标准孔板、径距取压标准孔板、长径喷嘴以及文丘里管和文丘里喷嘴、双重孔板、偏心孔板、圆缺孔板、锥形入口孔板、端头孔板、皮托文丘里管、音速喷嘴等。

Flying at an altitude of 30,000 meters to reach a maximum speed of 3.5 times the speed of sound, called it "two-three."

飞行高度达到30000米，最大速度达到3.5倍音速，这称之为&双三&。

The conclusions are: The sonic velocity determined by the material's properties is the upper limit of the crack velocity; Bridging fibers plays a key role in increasing the composite's toughness and stopping the crack's propagation; The semi-infinite crack propagating in infinite region with the fiber bridging traction action is equal to the semi-infinite crack propagating in strip.

结论有：(1)由材料性能决定的音速是裂纹传播速度的上限；(2)桥联纤维在增韧复合材料和组织裂纹扩展中起了关键作用；(3)受桥联纤维力作用的半无限长裂纹在无限域中扩展等效于半无限长裂纹在带域中扩展。

A whip makes a cracking sound because its tip moves faster than the speed of sound(760 miles per hour).

鞭子能发出劈啪声，是因为鞭端运动的速度比音速（每小时760英里）快。

This paper presents design and experimental resultsfor a high performance single stage transonic fan with design pressureratio 2.3 and design efficiency 0.88 at high tip speed 510m/s (relativeMach number reaches 1.72) and low aspect ratio.

本文介绍一高性能单级跨音速风扇的设计与试验结果。该风扇设计压比2.3，设计效率0.88，具有高切线速度510 m/s(相对马赫数达1.72)和低展弦比。

Flapping and rotary gap have been investigated with the help of transonic unsteady aerodynamic forces.

使用跨音速非定常空气动力，对扑动间隙和旋转间隙进行研究。

Prior to this, the world's fastest jet flight record of 3.2 times the speed of sound, from the U.S. Air Force SR-71 "Blackbird" high-speed high-altitude strategic reconnaissance plane to create.

此前，世界上喷气式飞机的最快飞行纪录为3.2倍音速，由美国空军SR-71&黑鸟&型高空高速战略侦察机创造。

Existing aircraft speed record is 3529 kilometers per hour or 3.2 times the speed of sound, the United States by the SR-71 "Blackbird" reconnaissance plane in 1964 to create.

现有飞机速度纪录是时速3529公里或3.2倍音速，由美国SR－71&黑鸟&侦察机在1964年创造。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。