The operating principle of space vector pulse width modulation (SVPWM) is first described, and then the proposed self-tuning space current vector PWM (STPWM) technique is introduced.

首先介绍空间向量脉宽调变技术的基本原理，接著说明所设计的可自我调整参数之空间向量电流控制技术（STPWM）。

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Jobs outlined. Not content merely to add four times more landscaping than the space current has, Apple hired an arborist from Stanford to put in indigenous trees, including apricot orchards, he said.

他说，苹果不满足只是比现有的景观绿化面积增大了四倍，该公司还从斯坦福聘请了一位树木栽培专家，将本土树木加入其中，包括杏园。

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What is a space vehicle launching entity required to do according to the current Government Orbital Debris Mitigation Standard Practices?

根据现行的政府轨道碎片缓减标准做法，航天器发射实体需要做什么？

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Mr.Kelly's brother,Scott Kelly, is the current commander of the International Space Station.

VOA: special.2011.02.09

I've directed Administrator O'Keefe to review all of NASA's current space flight and exploration activities and direct them toward the goals I have outlined.

CNN: Bush: 'It is time for America to take the next steps' in space

While the benefits that the suits may provide are not critical for current space missions, both the MIT group and Dr Locke are thinking longer-term.

BBC: Gravity suit mimics Earth's pull for astronauts

The current space mission is Chris Hadfield's third trip into orbit.

BBC: Astronaut answers Reddit site questions from space