Positive Periodic Solution fora Class of a Delay Predator-prey System with Monotonic Functional Response and Impulsive Effect 一类具脉冲效应和单调功能反应的时滞捕食系统的正周期解
If the test is made in a wide range of speed, the V-T curve obtained is not always in a monotonic functional relation, but sometimes becomes a camelback shaped form practically. 假如在较大的切削速度范围内进行试验时,所得VT曲线并非经常是一单调函数关系,实际上VT曲线有时呈驼峰状。