The results showed the transformation frequency was higher as suspending medium composed MS and YEB to proportion.

实验表明：YEB和MS按适当比例混合作为悬浮培养基转化率较高；

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Provided is a method of focusing particles. The method includes: providing a suspension of the particles in a suspending medium;

提供了一种聚集颗粒的方法，该方法包括：提供所述颗粒在悬浮介质中的悬浮液；

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The medium of is suspending liquid with high density. Under the action of centrifugal force the minerals are separated according to their specific gravity in the heavy medium cyclone.

重介质旋流器的介质为高密度悬浮液，在离心力的作用下，矿物主要在重介质旋流器中按比重分离。

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