论文部分内容阅读
本文将指出上期的错误,并给出正确的表示法。 1.“150度”改成“150摄氏度”。“度”是以往我们习惯用法,不是法定计量单位。 2.“3.3k”改成“3.3kΩ”“k”是法定计量单位中的词头,表示倍数单位10~3,按规定,词头不可作单位使用。 3.“kg”改成“公斤”或千克。“kg”是法定计量单位中质量(重量)的单位符号。所以,符号仅用来表示相应的单位,不许错作文字使用。 4.“220V±50V”改成“220±50V”。按规定,计量单位不应插在数值中间。应将计量单位名称置于整个数值之后。 5.“20毫微秒”改成“20纳秒”(ns)”。
This article will point out the mistakes of the previous issue and give the correct notation. 1. “150 degrees” changed to “150 degrees Celsius.” “Degree” is used to us in the past, not a legal unit of measurement. 2. “3.3k” changed to “3.3kΩ” “k” is the legal unit of measurement in the head, said the multiple units 10 to 3, according to the provisions of the prefix can not be used as a unit. 3. “kg” into “kg” or kg. “Kg” is the unit symbol of mass (weight) in legal units of measurement. Therefore, the symbol is only used to indicate the corresponding unit, not allowed to make mistakes for the use of words. 4. Change “220V ± 50V” to “220 ± 50V”. According to regulations, units of measurement should not be inserted in the middle. The unit of measure should be placed after the entire value. 5. Change “20 ns” to “20 ns”.