total photosynthetic activity 总光合活力
maximum photosynthetic activity 最高光合作用活性
Through the comparison between different leaves, we also discovered that the yellow stripe on leaves won't weaken photosynthetic activity;
通过不同叶片的比较还发现：锦竹叶片上不过量的黄色条纹并不会使其光合生理活动减弱；
The answer to this riddle lies in the metabolic activity of early photosynthetic life-forms that slowly but surely transformed the chemical composition of Earth's atmosphere.
这个谜题的答案在于早期光合生命形式的新陈代谢活动，这种活动缓慢但一定改变了地球大气的化学成分。
Photosynthetic bacteria have the activity of hydrogen photoproduction and can convert solar energy into hydrogen energy utilizing organics.
光合细菌具有光合产氢活性，能利用有机物转化太阳能产生氢能。
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