This is not to say that they could not function more efficiently if the concentration of carbon dioxide in the air was higher.
这并非说空气中二氧化碳浓度再高一些，植物光合作用效率也不可能再提高。
The carbon concentration distribution function derived from partial linear differential equation by applying the feasibility of repeat adding can describe the innate character of multi stage ca...
运用线性偏微分方程的可迭加性质所求得的碳浓度分布函数能够描述多段法渗碳过程的物理本质。
The severity of carbon monoxide poisoning is a function of the duration of exposure and the concentration of the gas.
一氧化碳中毒的严重程度取决于一氧化碳的浓度和暴露时间。
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