This article introduces a method of direct usage of voltage source as a power for Hall element instead of constant current system.

本文介绍一种不用恒流源而直接用电压源为霍尔元件供电的方法。

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It can be seen from the formula: for a certain Hall device, the magnetic field B0 can be indirectly measured through measuring the Hall device if only the passing current I is constant.

从公式中可以看出，对于一定的霍尔器件，只要通过的电流i恒定不变，便可以通过霍尔器件的测量而间接测定磁场B0。

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Polls show public support for Mr.Obama's push for health-care reform has weakened in recent weeks, and the constant drumbeat of criticism at the town hall meetings has fed the perception that the political momentum for reform has slowed.

VOA: standard.2009.08.12

A half century before that, Ben Franklin helped to build a hall in Philadelphia and said the top of this hall would be open to a Muslim preacher from Constant and Obal This is the early 18th century in America.

再有半个世纪前，本·富兰克林帮助在费城建立了一座会堂,他说会堂的顶层将向,一位来自Constant和Obal的穆斯林布道者开放,这些都发生在18世纪的美国。

普林斯顿公开课 - 人性课程节选

What do Robin Chase of Zipcar, Gail Goodman of Constant Contact , and Linda Hall Keller of MinuteClinic have in common?

FORBES: Connections Help You Succeed: Where Women-Led Tech Companies Make Them