Valco electronic Valve Oven - Manual (Page 58)

The symbol for a compound unit that is a quotient (for example, degrees Celsius per minute or grams per liter) is
written with a negative exponent with the denominator.
For example:
°C min -1
instead of °C/min
g L
-1
instead of g/L
transient A brief voltage surge of up to several thousand volts, with a
duration of less than 50 µs.
U
UFM Ultra Fast Module
V
V volt
V ac volts, alternating current
V dc volts, direct current
VGA Video Graphics Array
W
w Width
W Watt