There are a variety of negative forms in English, such as negative words, negative prefixes, quasi-negative, negative sentences and so on.
英语中表达否定形式多样，如否定词、否定词缀、准否定词、否定句等。
2
The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
The electronic structure of quasi one dimensional disordered system is studied by the computation of the density of electronic states with the help of the negative eigenvalue theory.