网络释义专业释义英英释义
灰尘粒径大小通常小于500 微米（Micrometre）。小于10微米的 悬浮粒子（PM10粒子），即被认定有害于人体；小于2.5微米者，更可穿透 肺泡直达 血液。
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Micrometre
- abstract: The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: µm) or micrometer (American spelling) is an SI derived unit of length equaling 1×10−6 of a metre (SI standard prefix "micro-" = 10−6); that is, one-millionth of a metre (or one-thousandth of a millimetre, 0.001 mm, or about 0.
以上来源于: WordNet
柯林斯英汉双解大词典
micrometre /ˈmaɪkrəʊˌmiːtə/
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1.
N a unit of length equal to 10–6 metre 微米 ( symbol: μmFormer name micron)
双语例句
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On average, bacterias are about 1 micrometre long.
细菌的平均长度大约1微米。 。
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Micron: Alternative term for Micrometre. A unit to denote the caliper of paper and board.
微米：英文是百万分之一米的另一写法。表示纸或纸板厚度的单位。
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Previously, standard optical microscopes managed 20 times that with a clear viewing range of just one micrometre.
以前，标准的20倍光学显微镜，只能清晰观察到一微米范围。
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