数学、物理和化学式的写法:正文中的公式、算式或方程式,应编排序号。序号标注于该式所在行(最后一行)的最右边。如式较长,必须转行时,只能在有计算符号处转行。上下式应尽可能在等号处对齐。各种式中的符号要注意区别:如不同国家的文字及字母、正斜体、黑白体、大小写、上下角标(特别是多层次结构,如 Mathematical, physical and chemical style of writing: the body of the formula, formula or equation, should be arranged serial number. The serial number is marked on the right-hand side of the line (the last line) of the formula. As long as the formula must be changedover, only in the calculated symbols at the switch. Up and down should be aligned at the equal sign as possible. Symbols in various types to pay attention to the difference: If different countries of the text and letters, italics, black and white, upper and lower case superscript (especially multi-level structure, such as