need help to read some symbols. Thx! thx! thx!

[hdungbeat]

Giup tui doc may cai nay bang tieng A voi

dE/dt, ∂A/∂B, [∂A/∂B],
(∂A/∂B),{∂A/∂B},
(∂A/∂B), Z=fn(x,y)
(∂P/∂S)v=const.va cac ki hieu nhu: #,~, ?, >, →, ↔, ┴, ≡.
Tien day cho tui hoi bac nao co cai trang Web day ve cach doc cac ki hieu hoac cong thuc ko? chi tui coi nhe!

thanks alot!