... per unit calculation 相对值计算,标幺值计算 per unit volume concentration 单位体积浓度 percent break 脉冲断开时间百分率 ...
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If I integrate the concentration of smoke, which means the amount of smoke per unit volume over d, I will get the total amount of smoke in d, except, well, let's see.
如果对烟雾的浓度积分,浓度就是区域d中,单位体积的烟雾的量,我们就得到了烟雾的总量。
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