As a whole, we can recognize that the syllables zhi, chi, shi, ri, zi, ci, si, yi, wu, yu, ye, yue, yuan, yin, yun, ying, *** 16 correspond to different initials or finals, such as zhi, chi, shi. One, five, corresponding vowels I, u, v.
The meaning of u
In computer science, a U is the height of the chassis, that is, 44 mm or 1.75 inch.
In IT technology, U is the unit representing the external size of the server, which is the abbreviation of unit. Detailed dimensions are determined by the American Electronics Industry Association (EIA) as an industry group. 1U = 4.445 cm.
In physics, the sign of potential or voltage is V (Volt).
In mathematics, U stands for union, and inverted ∩ stands for intersection (both an operation symbol and a set).