求翻译：聚合物共混改性的主要特征在于，共混过程中，在机械剪切力和物理力的作用下，有的体系还同时存在化学反应，使得作为改性剂的聚合物和基体树脂得以充分的混合。是什么意思？

The main features of the polymer blend modified is the blending process, the effect of mechanical shear force and physical force, some system of simultaneous chemical reaction, the polymer as a modifier and the matrix resin can be fully mix.

A total of living modified organisms mixed polymer main feature is that, in the process of mixing, the mechanical shear and the role of physical force, the system is also present at the same time as a chemical reaction that makes the polymer modifier and base resin to be able to fully mix.

The polymer altogether mixes the modified main characteristic to lie in, altogether mixes in the process, in the mechanical shearing force and under the physical strength function, some systems also simultaneously has the chemical reaction, causes to take the modifier the polymer and the substrate r

Main characteristics of polymer blending modification is, blending process, under the action of mechanical shear stress and physical force, chemical reaction system also exists, as a modifier for polymer and resin matrix are fully mixed.

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