“primary productivity of waters”的概念、定义、翻译、参考文献-科学参考

单词	primary productivity of waters
释义	primary productivity of waters Encyclopedia 理学水体初级生产力释 primary productivity of waters水体初级生产力水体中自养生物（大型水生植物、浮游植物和营光合作用的细菌等）在单位面积、单位时间内，通过光合作用或化学合成制造有机物的速率。通常用卡/平方厘米/天的能量，或克/平方米/年的碳，或干有机物质作单位表示。
随便看	variable specific impulse magnetoplasma rocket variable-speed constant-frequency variable speed control moment gyro variable speed drive variable speed operation variable speed pumped storage variables quality characteristic variable-stability aircraft variable stability flight control variable stage variable star variable stator vane variable step size variable step size method variable stroke technology for internal combustion engines variable structure variable-structure variable structure automaton variable structure control variable structure control system variable-structured system variable structure guidance law variable symbol variable temperature blackbody radiation source variable temperature control of greenhouse

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