fuscusCOCA¹⁹⁸⁹⁹⁴BNC¹⁷³⁹⁹⁵⁺² 基本例句 🌏青海田鼠;背斑狗母鱼;褐穗莎草 Objective:To determine the sampling method for Microtus fuscus, sample amount of parasitic fleas on surface of Microtus fuscus and the least sampling amount for pathogenic and serological methods. 目的:确定青海田鼠抽样方法及该鼠体外寄生蚤抽样数量;病原学和血清学最低抽检数量。 www.bmsw.net.cn