The earth's surface itself serves as the reference space.

地球表面即可视为基准空间。

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Narrates the conventional method of SVPWM algorithm, by which the little zone of the reference space voltage vector is decided, and studies a new simple method.

概述了传统空间矢量pwm算法中判断参考空间电压矢量所在扇区和小区域的方法，研究了一种新的简单的判断算法。

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For the inverters of the levels of any order, this algorithm can easily judge which vector the reference space vector falls in, and conduct the composition operations of the vectors.

对于任意阶电平数的逆变器而言，这种算法能够方便地判断出参考空间矢量所落入的扇区，非常容易地进行矢量的合成运算。

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But if you go to outer space nowadays, you can find truly inertial frames of reference.

但如今,要是你到了外太空,你可以找到真正的惯性参考系

耶鲁公开课 - 基础物理课程节选

In reference to each body on each moment in Time there are always only two coordinates in Space for one perpendicular.

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And sell it did, so much so that it moved the titans of tech to innovate the space, with Google enlisting ASUS' engineering for its popular and affordable Nexus 7 reference tab (named for its relatively diminutive size) and even Apple, which once infamously disavowed the smaller format altogether, releasing the 7.9-inch iPad mini.

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