灰尘 Dust
（重定向自Anti dust）
灰尘是大气中一种固态悬浮物，常态存在于空气之中，易伴随风的吹拂而四散至各处，包括家中的每一个角落。其粒径大小有所差异，不一定能以肉眼见到。
灰尘颗粒的直径通常小于500微米。小于10微米的悬浮粒子（PM10），即被认定有害于人体；小于2.5微米的细颗粒物（PM2.5），更可穿透肺泡直达血液。
Anti dust
中文百科
英语百科
Dust 灰尘
（重定向自Anti dust）
Dust consists of particles in the atmosphere that come from various sources such as soil, dust lifted by weather (an aeolian process), volcanic eruptions, and pollution. Dust in homes, offices, and other human environments contains small amounts of plant pollen, human and animal hairs, textile fibers, paper fibers, minerals from outdoor soil, human skin cells, burnt meteorite particles, and many other materials which may be found in the local environment.
- hereditary persistence of fetal hemoglobin syndrome的意思
- Hereditary persistence of fetal hemoglobin thalassemia的意思
- hereditary phenomenon的意思
- hereditary phlebectasia of the lips的意思
- hereditary physician的意思
- hereditary piebaldism的意思
- hereditary pituitary dwarfism的意思
- hereditary pityriasis的意思
- hereditary plasticity的意思
- hereditary polycystic osteodysplasia with progressive dementia的意思
- hereditary polydactyly的意思
- hereditary polyfibromatosis的意思
- hereditary poly morphic light eruption的意思
- hereditary polymorphic light eruption的意思
- hereditary polymorphism的意思
- hereditary polymorphous light eruption的意思
- hereditary polyneuropathy的意思
- hereditary polyposis的意思
- hereditary polyposis coli的意思
- hereditary porphyria的意思
- hereditary porphyria cutanea tarda的意思
- hereditary porphyria cutarea tarda的意思
- hereditary posteriorcolumn ataxia的意思
- hereditary potence的意思
- hereditary potency的意思