Research is made into the differential amplifier circuit by means of circuit theory analysis, differential amplifier theory analysis, "virtual-short" theory analysis and experiment way.

采用电路理论分析、差放理论分析、“虚短”理论分析及实验的方法对差分式放大电路进行了研究。

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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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Rather than seeing the real and virtual realms as distinct and conflicting, in short, it makes sense to see them as complementary and connected.

总体来说，与其把现实世界和虚拟世界看成是截然不同的对立面，不如把它们看成是互为补充、互相联系的两个世界。

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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

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

Branded badges as virtual symbols of conspicuous consumption can be a strong check-in incentive in the short term among the early adopters, but they will probably have about the same shelf life and the breadth of appeal as a corporate island in Second Life.

FORBES: Deals, Not Badges Will Attract Mainstream Check-Ins