bivalvia meaning in English

双壳纲
双壳类

Studies on the bivalvia mollusca of the vietnam coast
越南沿海的双壳纲软体动物
Chlamys farreri , which belongs to mollusca , bivalvia , pterioidae pectinidae , are widely distributed on the china from donghai sea to bohai sea , korea and japan . this species has been the main aquacultrue shellfish for many years in northchina
利用同工酶技术，对中国栉孔扇贝和日本栉孔扇贝的遗传差异进行了比较分析，并对它们的正反交后代的酶表型及遗传型进行了分析，探讨了亚种间杂交的机制。
In the warm period , the aquatic bivalvia was well - developed , and the gastropod fauna was obviously prosperous and characteristic by large amount of the aquatic species . the alternative appearance of both cold and the warm mollascan assemblage tpyes reflects the features of the quaternary climate changes in this area
在冷期因气候干燥，环境中水量减少，腹足类化石以陆生肺螺类最为发育；在暖期水生双壳类较为发育，腹足类群明显繁盛，以水生种类的大量出现为特征。