The amount involved is minuscule, as is the quantity of electricity needed to keep the filter charged (a small solar panel would be sufficient to supply it).

它所耗费的成本是微不足道的，只是这种过滤器需要一定的电能(一个小型太阳能板足够给它供能)。

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A voltameter is a scientific instrument used for measuring quantity of electricity.

电量计是测量电量的科学仪器。

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The current measured in amperes is the quantity of electricity flowing in the conductor.

以安培度量的电流就是在导体里流动的电的数量。

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Tim Worstall, a fellow at the Adam Smith Institute, dismissed the quantity of electricity being used for mining as "trivial" on the website Forbes.

BBC: Bitcoin miners generating high energy bills

The Conservatives want mechanisms to force markets to provide a minimum level of gas storage and a minimum quantity of spare capacity in electricity generation.

ECONOMIST: A looming electricity crunch could trip up a new government