Considering the distribution of thermal stress in composite, the biggest stress exits at the sharp Angle of particle.

在复合材料中存在的热应力分布中，颗粒尖角处的应力最大。

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But the material particle DNA sharp separation purification to the ultra centrifugal equipment (supercentrifuge, turned the head with appurtenance) to set a higher request.

而质粒dna的快速分离纯化又对超离心设备(超速离心机、转头和附属设备)提出了更高要求。

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The particle-size classification of moving dune and semi-fixed dune was better, which showed a strong positive bias and a sharp peak.

移动沙丘和半固定沙丘分选较好，表现出极强的正偏和较尖的峰值；

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