The fishing hook has the advantages that more fish can be hooked, the hooked fish cannot escape and the fishing effect is improved.

本发明的优点是：上钩的鱼多；上钩的鱼无法脱逃，提高了垂钓效果。

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These analyses are of great values to the study and solving of "fish hook effect", and give a direction to the operation of a turbo air classifier and the production of powders.

对减弱粉体分级过程中的“鱼钩效应”、涡流空气分级机的操作，具有一定的指导意义。

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