Direction Indicator. A gyro instrument which indicates the magnetic heading of an aircraft. The DI, also known as the directional gyro (DG), is free of the turning errors associated with magnetic compasses but is prone to precession (wander) and must be reset against the magnetic compass at intervals. Found on http://airodyssey.net/reference/glossary/
[Chinese concept] ==Etymology== Dì is the modern Mandarin Chinese pronunciation. The Old Chinese pronunciation has been reconstructed as *lˤej-s. ==Views== ===Taoism=== The dualism of Heaven and Earth are important to Taoist cosmology. They are thought to maintain the two poles of the Three Realms of reality, with the middle realm occupie... Found on http://en.wikipedia.org/wiki/Di_(Chinese_concept)
in music, transverse (or side-blown) bamboo flute of the Han Chinese. Traditional di have a membrane of bamboo or reed tissue covering the hole that ... [5 related articles] Found on http://www.britannica.com/eb/a-z/d/41