[经] 连续增长与离散增长 continuous versus intermittent models: 连续生产与间断生产模型的比较continuous growth: 连续生长discrete growth step function: 离散生长阶段函数continuous and discrete time models: 连续和离散时间模型continuous-to-discrete-time conversion: 连续时间到离散时间转换下载手机词典可随时随地查词查翻译