...、负离子浓度乘积时的平衡，叫杜南（道南）平衡。 它不消耗代谢能，属于离子的被动吸收方式。 2、主动吸收（active absorption）：又叫主动运输，代谢吸收，指 细胞利用呼吸释放的能量做功而逆着浓度差吸收矿物质的过程。
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植物吸收金属元素的过程主要是一个主动吸收过程。
The process in which plants absorb metallic elements is mostly an initiative absorption process.
主动吸收：亦称代谢吸收。指细胞直接利用能量做功，逆着电化学势梯度吸收离子的过程。
Active transport The use of energy to move a solute across a membrane against a concentration gradient, a potential gradient, or both (electrochemical potential) . Uphill transport.
香叶树的暗呼吸强度最低而水分利用效率最高，腊梅则对土壤矿质营养的选择性主动吸收能力最强。
Among these four species, the dark respiration rate was lowest and the water use efficiency was highest for L. communis, and the selected absorptance of mineral nutrients was strong in C.
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