Tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell .
微小的海水及淡水甲壳动物,身体象虾,双壳。
Primary studies on the elimination of algae by three kinds of freshwater bivalve .
三种淡水贝类对藻类消除作用的初步研究。
The use of bivalve filtration rate in toxicity study on marine pollutants .
双壳类清滤率在海洋污染物毒性研究中的应用。
The hard , siliceous bivalve shell of a diatom .
硅藻细胞壳硅藻的坚硬含硅的硬壳。
The study on arsenic species analysis of aquaculture fish and bivalve in blackfoot disease hyperendemic area .
乌脚病盛行地区养殖鱼贝类砷物种分析研究。
Marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface .
海生双科类软体动物,壳重而带齿,壳内表面深且象船。
This allowed them to follow 431 " lineages " of marine bivalve through the course of geological time .
这样,他们便可以沿着地质学的时间轴逐个研究431支海洋双壳类的“世系(lineages)”。
According to both the oxford english dictionary and the american heritage dictionary , in ancient greek the bivalve shells you might find at the beach were called ostrakon .