Codes for the representation of names of languages - Alpha-4 code for comprehensive coverage of language variants1 Scope This part of ISO 639 specifies a method for establishing four letter language identifiers (alpha 4) and languagereference names for language variants and a hierarchical framework for relating them to languages, language families and language groups. The alpha 4 language identifiers have been developed for use in a wide range of applications, especially in computer systems, where there is a potential need to cover the entire range of languages,

the low voltage sections can be applied to the high voltage networks

Manufacturers of air quality control devices such as diffusers

• determine the corrections to the “reference” USCD to take into account the specific properties (notably insulator profile) of the "candidate" insulators for the site

It facilitates the transfer of data to support the creation of point-of-care applications

The major changes introduced in this European Standard from the previous edition are:

ISO 8871-3 is the third part of a multi-part series that outlines methods for the determination of the number of visible and subvisible particles

and the rated supply frequency and the internal operational frequencies do not exceed 500 Hz

What does this standard offer

This range includes the liquefied natural gases (LNGs) and liquid petroleum gases (LPGs)

the detail specification should contain sufficient detail

2 Strength of the rungs

The double flanges used as track rollers are installed to bear the vehicle weight