Is there a limit to how much life a given quantity of matter can hold?
给定质量的物质所能容纳的生命数量有没有限度?
It's also why, to extract a given quantity of metal, less material needs to be processed, which is the most environmentally destructive part of mining.
同样,提取同样数量的金属所需处理的物质相对较少。
The power available from a given quantity of gas is directly proportional to its heating value.
对给定数量的汽油,其产生的有效动力与它的热值成正比。
And that implies that since the quantity we want is given by this quantity, which is zero times a constant, the quantity we want is also zero.
因为我们需要的量,是由这个量乘以一个常数,因为这个量是零,因此我们需要的量也是零。
What this really means is in a given time, the change in this quantity is a times the change in this quantity.
这里的真正含义是在给定的一段时间内,这个量的变化量等于,a乘以这个量的变化量
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