The ability of a moving-mass control system to control the attitudes of a spinning vehicle is investigated.

研究了旋转弹变质心控制系统的姿态控制问题。

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The response characteristic of moving-mass control for the low-altitude aircraft is researched based on the moving-mass control system model of the flying saucer.

在建立碟形飞行器变质量矩控制数学模型的基础上，对低空飞行器变质量矩控制的响应特性进行了仿真研究。

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Siemens has been awarded the contracts of supplying signalling systems, train control and propulsion system for Guang-Fo line, China's first intercity mass transit line.

西门子已得到合同，为中国首条城际地铁线路——广佛线提供信号系统，列车控制及牵引系统。

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They are up against the lethal road chaos of a city of 8m people that lacks a mass-transit system and where government has little control over public transport.

ECONOMIST: A small battle for the rule of law

Our goal is to take the smaller equipment that's flexible, put it on vessels of opportunity, and then coordinate better with our local state partners, including National Guard overflights, local fishermen's associations, and so forth, mass our effect and get it pointed up with a command and control system that can attack it on all levels.

WHITEHOUSE: A First-Hand Look at the Federal Response to the BP Oil Spill