In Earth's early days, all over the planet countless photosynthetic bacteria performed photosynthesis.
在地球早期，整个星球上有无数的光合细菌在进行光合作用。
Members of a group of mostly aquatic, photosynthetic organisms (see photosynthesis) that defy precise definition.
一群主要是水生的、能行光合作用而无法精确定义的有机体。
The LI_6400 Portable photosynthesis of LI_COR was used to study the photosynthetic characteristics in leaves of Gerbera hybrida in greenhouses.
运用美国LI＿COR公司制造的LI＿6400便携式光合作用测定系统，研究了非洲菊的光合特性。
Low temperature in winter limited photosynthetic carbohydrate metabolism and photochemical reaction caused low photosynthesis.
光合碳代谢和光化学反应受低温限制是冬季光合作用较低的重要原因。
Aluminum stress was found to affect the photosynthesis of longan seedlings and reduce the photosynthetic efficiency. The non-stomas factors were observed to mainly hinder the photosynthesis.
结果表明，铝胁迫影响龙眼幼苗光合作用，导致光合效率降低，非气孔因子成为限制光合作用的主要因子。
Transferring C4 photosynthesis trait into C4 plant to improve their photosynthetic characteristics has been an active re - search area in plant biology.
将C4光合特性转移到C4植物以提高其光合能力，一直是十分活跃的研究领域。
The subsequent effect of low temperature on photosynthesis in pot cultured tobacco seedlings were studied with a CIRAS-1 photosynthetic system, and related photosynthesis indexes were tested.
采用CIRAS 1光合系统测定了各项光合指标，研究了低温对烟苗叶片光合作用的后续影响。
The subsequent effect of low temperature on photosynthesis in pot cultured tobacco seedlings were studied with a CIRAS-1 photosynthetic system, and related photosynthesis indexes were tested.
采用CIRAS 1光合系统测定了各项光合指标，研究了低温对烟苗叶片光合作用的后续影响。
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