地层砂粒度中值 median formation sand grain size ; formation median grain size
安氏型砂粒度测定仪 Andreasen pipette
砂粒细度指数 grain fineness number
石英砂粒度 Quartz sand size
砾石-地层砂粒度比 gravel to sand size ratio
砂粒球度 sand grain sphericity ; sphericity
砂粒圆度 sand grain roundness
砂粒粒度范围 sand particle size range
砂粒粒度分布 sand-grain-size distribution
在分析地层砂粒度分布的基础上，通过室内出砂模拟实验，确定了该油田各油层的防砂筛管挡砂精度。
On the basis of sieve analysis for the formation sand, through the simulation experiments of sand production, the sieve-opening sine of premium screen pipe for sand control was determined.
显著影响型砂渗透系数的因素是通流面积与抽气面积的比值，型砂粒度以及二者之间的交互作用，其影响程度依次减小。
The factors that remarkably affect the permeability of sand were the ratio of course area to pump area, granularity of the dry-sand and their interaction, and their affecting degree minished in order.
结果表明，在试验的浸出条件下，铬焙砂粒度对铬浸出率的影响不显著，铬浸出率随浸出温度升高、液固比增大和浸出时间延长而增加。
The effects of the calcine size, leaching temperature, leaching time and solution-solid ration no the leaching rate of the sodium chromate in the chromium calcine are investigated.
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