There were obviously seasonal variation of polychaete quantity.
数量有明显的季节变化。
The left-shell of Pteria penguin reared in cone cage was liable to infection of polychaete verminosis.
锥形笼养殖的企鹅珍珠贝左壳较易感染多毛类寄生虫病。
Polychaete Capitella capitata is an excellent indicator of polluted environment and attracted the attention of marine scientists.
小头虫作为一种广分布的有机污染指示种而为人们所关注。
These characteristics depend on the types of sediment, which in investigating area is coarse and polychaete does not fit to breed largely.
这些分布特征取决于底质类型，该海区沉积颗粒较粗，不利于多毛类繁衍。
These characteristics depend on the types of sediment, which in investigating area is coarse and polychaete does not fit to breed largely.
这些分布特征取决于底质类型，该海区沉积颗粒较粗，不利于多毛类繁衍。
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