我国的法定计量单位中,对量和单位规定了专门的名称和符号。例如对时间和力这两个量规定如下:同时在《中华人民共和国法定计量单位使用方法》中规定: 把法定单位名称中方括号里的字省略即成为其简称。没有方括号的名称,全称与简称相同。在初中、小学课本和普通书刊中有必要时,可将单位的简称(包括带有词头的单位简称)作为符号使用,这样的符号称为“中文符号”。但是,在实际使用单位的中文符号时, China’s legal units of measurement, the amount and unit provides a special name and symbol. For example, the following two terms, time and force, are stipulated as follows: In the meantime, the “Law of the People’s Republic of China on the Use of Statutory Units of Measurement” stipulates that the omission of the words in square brackets in the name of the legal entity shall be abbreviated. Without the brackets, the full name is the same as the abbreviation. In junior high school, primary school textbooks and general books, if necessary, the unit may be abbreviated (including with the head of the units referred to) as a symbol, such symbols are called “Chinese symbols.” However, in the actual use of units of Chinese symbols,