名词
中文翻译：后向挤压
同义词：
['retrograde extrusion', 'backward flow']
例句：
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1.The backflow of the river is causing problems downstream.
河流的后向流动导致下游出现问题。
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2.During the retrograde extrusion process, the material is forced to move in a direction opposite to its natural flow.
在逆向挤压过程中，材料被强迫沿着与自然流动方向相反的方向移动。
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3.The backward flow of data can be a sign of systemic issues within the organization.
数据向后流动可能是组织内部系统性问题的标志。