【化】 一级相变; 第一级相转变

first order triangulation station first order reflection predicate of first order coefficient of first order first order triangulation first order approximation first order goods first order difference equation first order traverse of the first order first order stationary first-order asymmetric transformation first order phase transition transformation phase phase transformation first(-)order first-order first order first-phase first difference transformation order preserving transformation second-order asymmetric transformation