1 关于体积单位表示问题我们知道在国家标准中明文规定了体积用升表示,即大写英文字母 L;而涉及到毫升、微升等不同数量级体积时,无明文规定该用 ml、μl还是 mL、μL。在中华系列杂志中经常发现用了 ml、μl,且认为 mL、μL是错误的。笔者认为,在国家标准中曾明文规定了表数量级符号的大小写问题,即千以上 1 on the unit of volume that we know in the national standard explicitly stated the volume with liters that the capital letter L; and when it comes to ml, liters and other different orders of magnitude volume, there is no express provision of the ml, μl or mL, μL. In the Chinese series of magazines are often found to use ml, μl, and that mL, μL is wrong. The author believes that in the national standard has expressly provided for the number of orders of magnitude of the case, that is, more than a thousand