文稿中注意外文字符的大小写及正斜体。物理计量单位符号一般用小写,但以姓氏命名的单位,如V(伏)、Hz(赫)及L(升)除外。组合单位符号不得超过一条斜线,如mg/kg/d应写成mg/kg·d-1。避免在组合单位中同时使用(外文)符号和中文符号,非标准计量单位(次、滴)除外。统计学符号(P、t、 Pay attention to the case of foreign characters and italics. The physical unit of measure symbols are generally written in lowercase, except for those named by name, such as V (volts), Hz (hertz), and L (liters). Combination unit symbols must not exceed a slash, such as mg / kg / d should be written as mg / kg · d-1. Avoid the use of (foreign) symbols and Chinese symbols in combination units, except non-standard units of measurement (times, drops). Statistical symbols (P, t,