Remember, all you have to do is fill in the one or two-letter abbreviation for the chemical symbol.

记住，你们只要，用一两个字母的缩写，来代表化学元素就可以了。

youdao

Remember, all you have to do is fill in the one or two-letter abbreviation for the chemical symbol.

记住，你们只要,用一两个字母的缩写,来代表化学元素就可以了。

youdao

You cannot apply drop cap formatting to an empty paragraph. You must first type at least one letter, number, or symbol.

空段落不能应用首字下沉格式，您必须先至少键入一个字母、数字或符号。

youdao

Remember, all you have to do is fill in the one or two-letter abbreviation for the chemical symbol.

记住，你们只要,用一两个字母的缩写,来代表化学元素就可以了。

麻省理工公开课 - 固态化学导论课程节选

You are required only to put the one or two-letter chemical abbreviation, the symbol.

你们只需要,用一两个字母来代表一个化学元素。

麻省理工公开课 - 固态化学导论课程节选