Yarn in front and yarn in back are typically written 'wyif' and wyib'. The instructions mean that the yarn to be knit into the next stitch is either in front or behind the needle.
In case you need more abbreviations, here's a link to a dictionary, below.
Ytterbium
YB Music was created in 1999.
Yb is the chemical symbol for ytterbium.
22 Yards Between the Wickets in Cricket
BSC YB Frauen was created in 1970.
It means that the rise divided by the run for a curve has the same value. If A and B are any two points on the curve, with coordinates (Xa, Ya) and (Xb, Yb), then (Yb - Ya)/(Xb - Xa) is a constant.
The correct formula for exponential interpolation is: y =ya*(yb/ya)^[(x-xa)/(xb-xa)], xa<x<xb and also, x=xa*[ln(yb)-ln(y)]/[ln(yb)-ln(ya)]+xb*[ln(y)-ln(ya)]/[ln(yb)-ln(ya)], ya<y<yb
If you are refering to storage capacity in computer terms, YB means Yottabyte.
Yb is a non metal element. There are 70 electrons in a single atom.
It means that the rise divided by the run for a curve has the same value. If A and B are any two points on the curve, with coordinates (Xa, Ya) and (Xb, Yb), then (Yb - Ya)/(Xb - Xa) is a constant.
Your Black.
The element yttrium has the symbol Y. This element and the element ytterbium (Yb) are both named for a quarry town in Sweden (Ytterby).