This method is called true constant component fixed method (TCF method).

笔者将该方法称为真恒量组份定值法(TCF法)。

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The Content Manager component remains constant.

内容管理组件保持不变。

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Constant speed drive, a hydro-mechanical component for changing variable engine gearbox speed to constant speed to drive the electrical power.

恒速驱动装置，将发动机齿轮箱的可变转速转变为恒速以驱动电源的液压机械式部件。

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The more important thing that I want you to notice when you're looking at this wave equation for a 1 s h atom, is the fact that if you look at the angular component of the wave function, you'll notice that it's a constant.

我要你们注意的,更重要的一点是,当你们看到,这个氢原子1s轨道方程的时候，如果你们看,波函数，的角向部分，你们会发现它是一个常数。

麻省理工公开课 - 化学原理课程节选

Because handedness has a genetic component the researchers wondered why the proportion of left-handers should have remained so constant over 30, 000 years - the age of the oldest cave studied.

BBC: Cave handprint, Montpellier University