VIRW is a new momentum exchange device, which can provide attitude control torque not only by adjusting the spin rate, but also by changing the inertia of the wheel.

变惯量反作用飞轮是一种新型的动量交换装置，不仅可以通过改变飞轮转速输出力矩，还可以通过改变其转动惯量实现大范围的力矩输出。

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The paper introduces the hardware and software design of the signal exchange device.

阐述了信号转换装置的硬件设计和软件设计。

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With PLC controlled sodium ion exchange device, the unmanned continuous production of softened water can be realized.

采用可编程控制器(PLC)控制钠离子交换装置，可实现无人化管理的连续软化水生产。

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But until recently they have suffered from a low power-to-weight ratio, unlike the other sort of room-temperature fuel cell, the temperamental and costly proton-exchange-membrane device, which several firms hope soon to use in motor cars.

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Users are willing to sacrifice traditional Web functionality and software customization in exchange for a mobile device's ease of use, barebones presentation of relevant information and speed.

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These plans, which are readily available, net you a lower monthly tariff in exchange for an omitted device subsidy -- in other words, bring your own phone, and you'll pay less for service.

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