Translations:Units/38/en

Base and derived unit symbols
According to The International System of Units (SI), the symbols to specify a units are officially approved. Two consequences can be highlighted from this.
 * it is not easy for a computer program to work with unit symbols because some are greek letters for instance. Hence they can be a bit difficult to process by a program
 * while some units and their symbols can be used widely, they may be not approved officially, like for instance tonne unit (see p32 of The International System of Units (SI))