气体的输运现象（英语：transport phenomena）表示一类气体由非平衡态转为平衡态的过程。
利用可视化双螺杆挤出机进行挤出观察实验，记录、描述并分析了同向双螺杆挤出中的固体输送现象，根据现象可把固体输送过程分为三个阶段。
With visualized twin screw extrusion experiment, solid conveying phenomena in twin screw extruders are observed, recorded, described and analyzed. The solid conveying can be devided into three stages.
如果你再研究一下为世界杯和职业联赛输送人才的欧洲国家青年队，你会发现这种奇怪的现象更加明显。
If you then examined the European national youth teams that feed the World Cup and professional ranks, you would find this strange phenomenon to be even more pronounced.
如果你再查看一下为世界杯和职业联赛输送人才的欧洲各国的国家青年队，你会发现这种奇怪的现象更加明显。
If you then examine the European national youth teams that feed the World Cup and professional ranks, you would find this strange phenomenon to be even more pronounced.
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