The difference between the spreading diameter and the slope of the ink measured by the parallel plate viscometer at 10 second is called the intercept of the ink characteristic line. Mathematically, it refers to the difference between (horizontal or vertical) coordinates of all intersections of a function and a coordinate axis, which can be any number.
The intersection of the curve with the X and Y axes (a, 0) and (0, b), where A is the intercept of the curve on the X axis; B is the intercept of the curve on the y axis. Intercept and distance are different, and the values of intercept are positive, negative and zero. The value of distance is non-negative.
Definition:
Intercept is a real number, not a "distance", which can be positive or negative.
The sum of intercepts is the sum of x-axis and y-axis intercepts.
When solving a problem, if the intercept of a straight line to the X axis and the Y axis is the same, it is also necessary to consider the situation that the straight line passes through the origin.