the main species meaning in English

主要品种

There has been a strong growth in aquaculture and the main species produced are salmon , trout , eels , mussels , lobsters , clams and scallops
水产养殖业的增长势头一直很强劲，生产的主要品种有：鲑鱼、鳟鱼、鳗鱼、贻贝、虾、蛤蜊和扇贝。
This article reviews the works about the main species of chinese underground pest grub and their occurrence , chemical and biological control
摘要总结了我国地下害虫蛴螬的发生种类及基本为害情况，归纳了蛴螬的化学、生物与其他防治方法。
Abstract : this paper introduces the derivative products of the basic concepts and features of the main species , so that their readers have a whole understanding
本文首先介绍了衍生金融工具的基本概念、特征与主要种类，使读者对其有个整体的认识。
This paper discussed the progress for biology of seven types of wasps , medical care of men attacked by wasps and prevention methods for sting wasps , introduced the main species which we have known at present and gave some suggestiones
论述了我国对7种袭人胡蜂的生物学及胡蜂哲人后的救治及有害胡蜂的预防和防治方法的研究进展，介绍了目前已知的主要种类，并对今后的研究提出了具体的建议。