the twelfth letter of the Greek alphabet (M, μ), transliterated as ‘m’ 希腊字母表中第十二个字母(译写为m) ■(Mu)[followed by Latin genitive](Astronomy)the twelfth star in a constellation (天文)μ星(星座中第十二颗星) Mu Cassiopeiae. 仙后座μ星。 ■[as modifier](Physics)relating to muons (物理)与μ介子有关的 mu particle. μ粒子。
symbol for
■(μ)micron 微米 ■(μ)[in combination]‘micro-’ in symbols for units [与计量单位符号组合]微 the recommended daily amount is 750μg. 建议的每日用量是750微克。 ■(μ)permeability 渗透性