The complete form of kg is kg. Abbreviation is an important part of writing course. It is a word shortened and omitted from a long word for convenience. For beginners, it is very important to master the methods and skills of abbreviation. The abbreviation of extended data refers to Chinese words that are shortened and omitted from longer Chinese words for convenience. Abbreviations should be faithful to the original text without changing the theme or central idea of the original text or changing the outline of the original text. It can also be short for a longer name. After abbreviation, you must ensure that the meaning of the word will not be distorted. Some words will become another word after abbreviation. In this case, abbreviations cannot be used.