But chemicals can hold a lot of energy, so batteries have high energy density (the amount of energy they can contain, again per unit weight).
但是化学物质可以储存很多能量,所以电池有很高的能量密度(每单位重量可以包含的能量)。
单词 | unit weight |
例句 |
原声例句
经济学人(汇总) But chemicals can hold a lot of energy, so batteries have high energy density (the amount of energy they can contain, again per unit weight). 但是化学物质可以储存很多能量,所以电池有很高的能量密度(每单位重量可以包含的能量)。 |
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