7.The community species mainly consisted of Coleopteran and Lepidoptera secondly.The above-mentioned 2 species made up the main body of this community in which initial pests dominated in number.
不同出口农产品昆虫群落的物种组成差别不大,5种出口农产品除大蒜外,初虫在数量上均占有相当大的优势。
8.Secondly, the structures of various multicouplers and their matching networks are introduced and discussed, and the design period of broadband matching network in multicoupler is presented in brief.