According to "virtual short" and "virtual-off" feature, available to the circuit passband voltage gain and pass-band cut-off frequency.

根据“虚短”和“虚断”的特点，可得到电路的通带电压放大倍数和通带截止频率。

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Using the concept of virtual short circuit and virtual open circuit, the voltage gain of depth negative feedback circuit can be estimated.

利用“虚短”和“虚断”的概念来估算深度负反馈电路的电压增益。

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Some students who are addicted to the virtual world can't bear being separated from mobile phones even for a short while.

有些沉迷于虚拟世界的学生无法忍受与手机分开，即使是短短一会儿也不行。

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This is that the universe popped out of nowhere about 13.7 billion years ago in a quantum fluctuation similar to the sort that constantly create short-lived virtual particles in so-called empty space.

ECONOMIST: Cosmology

We now have a good decade of studies showing what works well in virtual management, and what falls short.

FORBES: Five Things Every Virtual Manager Should Do

On the one hand, Citrix optimizes the user experience and virtual application delivery, a well known immediate short-term solution, and partners with Microsoft to augment their solution.

FORBES: Why You Cannot Rely on Vendors for Your IT Strategy