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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Calls out direct materials P/N, description, usage, and designator.

直接罗列所用材料料号，规格，用量，点位。

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However, guessing the exact name or key of a service with out a direct communication with the service provider is made difficult by the fact that the word usage is different in different locations.

但是，在没有与服务提供者进行直接通信的条件下，猜中一个服务的准确名称或者关键字是非常困难的，因为在不同地方词的用法是不同的。

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Direct feedback and feedback through usage contributed to hundreds of visible changes in the product and tens of thousands of under-the-hood changes.

CNN: Final preview moves Windows 8 toward tablets

The most direct way would be to charge consumers a fee based on their usage of the network.

FORBES: $5 Debit Card Fee Got You Mad? Time For Deposit-Only Banks

I've previously chided the idea of MSN Direct, noting that most competent feature phones can do everything that a smart watch can, but the usage model is different.

ENGADGET: Switched On: The gist on your wrist