气体的流速,是用单位时间内通过柱子或检测器的气体体积大小来表示的,常用单位是毫升/分,测量气体流速的方法很多,在气相色谱中,由于气体流速较小,载气与氢气流速为20~150ml/分,空气流速为200~1000ml/分。气体在流速大的地方压强较小,在流速小的地方压强较大。
上颌窦口和上颌窦内的气体流速均较低。
The airflow in the maxillary air sinus and by the maxillary hiatus was slow.
此研究结果表明这类激光器的小信号增益分布与气体流速有关。
The results show that the small signal gain distribution of such laser is closely related to gas flow rate.
考察了搅动气体流速、物流通量及塔板构件等因素的影响规律。
Effects of turbulent gas velocity, particle flux and baffles on them were examined.
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