In the step of exact location, the district method is adopted in view of the iris edge gradation jump characteristic to accurately to locate the iris the outside edge.
精定位阶段针对虹膜边缘灰度跳变特性采取了分区方法准确定位虹膜的外边缘。
The dynamical model of jump vibration is built, the nonlinear dynamical characteristic of jump vibration is studied and find the sub-harmonics vibration is main characteristic.
建立了振动压路机跳帧的动力学模型，研究了跳振时振动压路机的非线性动力学特性，选取次谐波共振为跳振的主要特征。
Quantity of phase jump and wavelength of incident light are correlative with optical characteristic quantity of metal itself when it is reflecting on metal surfaces.
光在金属表面反射时的位相跃变值与入射光波波长和金属本身的光学特性有关。
Quantity of phase jump and wavelength of incident light are correlative with optical characteristic quantity of metal itself when it is reflecting on metal surfaces.
光在金属表面反射时的位相跃变值与入射光波波长和金属本身的光学特性有关。
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