This article studies the six-degree-of-freedom trajectory simulation of small multiple stage solid launch vehicles with control systems using lateral jet thrusters and grid fins.

针对控制系统采用侧喷流发动机和栅格舵的新型小型多级固体运载火箭开展六自由度弹道仿真研究。

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Thus, the multiple stage blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.

因此，该多级吹风机可以在较窄的马达速度范围内提供较快的压力响应和需要的流动特性，从而更可靠和产生较少的噪声。

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By the end of the Song Dynasty, the Chinese invented multiple-stage rockets.

到宋朝末期，中国人发明了多极火箭。

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It turns out that Simmons has multiple personas, or rather multiple stage names.

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Numerous testimonies from fans also were contradictory as to the actions of the multiple fans that tried to access the stage.

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Warrell says that Erbitux's troubles validate his more conservative approach to testing Genta's Genasense drug, now in final-stage testing for melanoma, lymphoma and multiple myeloma.

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