The distinction becomes easier to grasp if you think of action-based frameworks as using a "push" model, whereas component frameworks utilize a "pull" model.
如果将基于动作的框架想象为使用 “push” 模型，而将组件框架想象为使用 “pull” 模型，那么这种区别就很容易理解了。
In the paper, the special CCD satellite-imaging model is established based on imaging principle of CCD push-broom satellite and the distortion law of satellite images is also discussed.
文中从CCD推杆式卫星成像机理出发建立CCD卫星成像的严密模型，并在此模型的基础上探讨卫星影像变形规律。
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