《英汉医学词典》sequential impaction cascade sieve volumetric air(sampler) 连续装紧栅滤网式空气容积(取样器) automatic sequential air sampler: 自动连续空气抽样器impaction sampler: 碰撞取样器cascade sampler: 阶式取样器impaction sampler jet impactor: 碰撞取样器volumetric snow sampler: 容积雪取样器下载手机词典可随时随地查词查翻译