angstrom
柯林斯词典
1. N a unit of length equal to 10–10 metre, used principally to express the wavelengths of electromagnetic radiations. It is equivalent to 0.1 nanometre 埃; 一億分之一厘米,用作測量波長的單位、代號 (Also called angstrom unit symbol: Å, symbol: A)
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