After 20 century 70s, fish species composition significant changed on the basis of the species composition of fish-scale-deposition.
通过鱼鳞种类组成比例的改变，发现上世纪70年代后，鱼类资源结构发生了显著的变化。
According to the data selected from bottom trawl fishery resource monitoring in the East China sea from 1997 to 2000, the species composition and seasonal variation of small-sized fish were analysed.
根据1997 ~ 2000年东海区底拖网渔业资源调查资料，分析和讨论了东海区小型鱼类的种类组成和季节变化。
The results indicated that except reef fish, the seasonal changes of fishery species composition in seaweed bed (SB) were much more obvious than those out of the seaweed bed (OSB).
结果表明，枸杞岛海藻场内的渔业生物组成的季节变化比藻场外明显，但岩礁性鱼类除外；
A study was carried out on species and specific composition of aquatic microorganisms in fish-rice ecosystem in soda saline-alkaline land of the Songnen Plain.
对松嫩平原苏打盐碱地养鱼稻田水体微生物数量及种类组成进行了初步研究。
The lipid and fatty acid composition of muscle of three species of cultured freshwater fish, silver carp, blunt snout bream, large mouth black bass, was examined in this paper.
测定了鲢、大口黑鲈和团头鲂三种养殖淡水鱼肌肉脂质的含量、分布、成分及脂肪酸组成，调查了鲢肌肉脂质含量与体重的关系。
The lipid and fatty acid composition of muscle of three species of cultured freshwater fish, silver carp, blunt snout bream, large mouth black bass, was examined in this paper.
测定了鲢、大口黑鲈和团头鲂三种养殖淡水鱼肌肉脂质的含量、分布、成分及脂肪酸组成，调查了鲢肌肉脂质含量与体重的关系。
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