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n. 撞击器;悬浮粒的取样器
cascade impactor 阶式碰撞取样器

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orthostigmat, orthostyle, orthosurface, orthotast, orthotaxy, orthotest, orthotic, orthotics, orthotist, orthotomy,

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impactful, impaction, impactite, impactive, impactometer, impactor, impactsound, impaint, impair, impaired,