阶: steps; stairs链: chain高阶链: high-order chain零阶链: zero-order chain阶零点: zero of order k k阶理想: order ideal阶柳庭花: the willow beside the steps and the flowers in the courtyard阶框架, 指数框架: exponent frame阶路响应时间试验: steresponse test阶宽: width of step阶逻辑: order logic阶块: order block阶码范围: exponent range阶矩阵: n-matrix
