气管又分支成许多微气管，微气管里充满液体，吸入的氧气溶解于其中，穿透气管管壁扩散到昆虫的无数细胞中。
dissolves and then diffuses across the wall of the tracheole and into several of the insect’s cells.
新研制的甲醛被动式检气管是建立在气体分子扩散和化学吸收原理基础上的。
A new detection tube for formaldehyde gas based on passive sampling has been developed according to the principle of the gas molecular diffusion and chemical adsorption.
另外，健康猪只在鼻腔、扁桃体、上呼吸道和支气管也可以携带猪链球菌，加速了这种疾病的扩散和传播。
Moreover, clinically healthy pigs could carry S. suis in their nasal cavities, tonsils and upper respiratory tracts, contributing to the dissemination and transmission of this pathogen.
应用推荐