Strong two dimensional effect on the field penetrating speed should be included in the fluid analysis for a plasma space distribution with high density gradient.
对于等离子体空间分布存在较大的密度梯度的物理问题，必须考虑二维空间特性对磁场渗透速度的影响。
The eosinophils in broncho-alveolar lavage fluid (BALF) were separated by density gradient centrifugation.
用密度梯度离心法分离并计数支气管肺泡灌洗液（BALF）中的嗜酸性粒细胞；
The eosinophils in broncho-alveolar lavage fluid (BALF) were separated by density gradient centrifugation.
用密度梯度离心法分离并计数支气管肺泡灌洗液（BALF）中的嗜酸性粒细胞；
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