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儿童口罩
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儿童口罩
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mask for children
儿童口罩
日常环境中,儿童人群用于阻隔飞沫、花粉、柳絮、微生物等颗粒物传播,阻隔鼻腔或口腔呼出或喷出污染物所佩戴的民用卫生口罩。
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extra dimension model
extradition
Extradition Convention between the Governments of Costa Rica,Guatemala,Honduras,Nicaragua and Salvador
extradural heat hematoma
extraembryonic coelom
extraembryonic ectoderm
extraembryonic endoderm
extraembryonic membrane
extraembryonic mesoderm
extra exposure
extra fine sand made of tailings
extrafloral nectary
extrafocal
extrafocal image
extrafocal photometer
extrafocal photometry
extra-foveal vision
extragalactic
extragalactic astronomy
extragalactic astrophysics
extragalactic background
extragalactic background light
extragalactic background radiation
extragalactic binary
extragalactic Cepheid
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更新时间:2026/6/5 14:30:19