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1.各种量和单位除在无数值的叙述性文字和科普期刊中可使用中文符号外,均应使用量和单位的国际符号。非物理量的单位(例如个、次、件、人等)用汉字表示。2.SI词头符号用正体,并与紧接其后的单个单位符号构成一个新的单位符号,且两者间不留空隙。10~6以上的词头符号(例如M、G、T等)大写,其余为小写。词头不能单独使用(例如“μm”不能写作“μ”),也不能重叠使用(例如“nm”不应写作“mμm”)。3.表示量值时,单位符号应置于数值之后,数值与单位符号之间留1/4汉字空。但平面角的单位度
1. Various quantities and units Except for the use of Chinese symbols in non-numerical narratives and popular science journals, the international symbols of quantity and unit should be used. Non-physical units (such as a, times, pieces, people, etc.) with Chinese characters. 2.SI prefix symbol with the body, and immediately followed by a single unit symbol form a new unit symbol, and no gap between the two. Uppercase letters of 10 to 6 or more (eg, M, G, T, etc.) are capitalized and the rest are lowercase. Heads can not be used on their own (eg “mpm ” can not be written as “mu ”) or overlays (eg “nm ” should not be written as “mpm ”). 3, said the value, the unit symbol should be placed after the value, the value and the unit symbol to leave 1/4 Chinese characters empty. But the unit of plane angle degrees