1, in calculus, is the concept of "increment", it is increment, but the book of foreigners still says.

Is the absolute majority of change. The latter quantity, minus the former quantity, whether positive or negative, is the "increment".

2. delta in English, usually called delta, is the fourth letter of the Greek alphabet.

Lowercase is δ.

3. Δ x is pronounced Δ x.

4.δ stands for triangle, ABC, which is pronounced as triangle A, B and C.

5.δ stands for b? -4ac is the discriminant of unary quadratic algebraic equation, and English is the discriminant.

6. In linear algebra, δ represents the coefficient determinant of unknown quantity, which is deterministic in English.

7.δ in physics, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, chemistry, science, chemistry.

Can also have nothing to do with small:

A, Δ q means the heat absorbed or released, and the difference in English is Endo and Exo；;

B and Δ q can also represent the amount of current;

C and Δ h represent enthalpy change, and the essence is still heat;

D and δ s are entropy changes;

E and δ indicate that chemical reactions need heating, which means heating in English;

F and δ can also represent small mass, moment of inertia, volume expansion,,,, and so on.