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- Then the equations for velocity distribution along vertical direction of the dry sand flow and that for velocity of sand mass sliding along the subface and top surface are derived. 将干砂流视为连续介质的流动,对干砂流的运动动力和阻力进行了深入研究,建立了干砂流垂线流速分布方程和干砂流体底面、表面滑动速度方程。
- Salt from the sea had encrusted on the dry sand. 海水中的盐分在乾燥的沙子上结成硬皮。
- The little dune is formed with loose dry sand by wind. 这个小沙丘是由风吹来的干沙子形成的。
- dry sand flow 干砂流
- Salt from the sea have encrust on the dry sand. 海水中的盐分在乾燥的沙子上结成硬皮。
- Can sand flow upward in the hourglass? 时光会倒流吗
- Why does wet sand look darker than dry sand? 为什么湿沙比乾沙深色?
- Why is wet sand darker than dry sand? 为什么湿沙总比乾沙深色呢?
- Hence, wet sand looks darker than dry sand. 因此,湿沙看来较乾沙深色。
- Fill three cups with equal amounts of dry sand, gravel or soil. 将等量的干燥沙子、砂砾或土装入三个杯子中。
- The airflow and the sand flow were taken as continuous flow bod y for study object in mathematical pattern. 在数学模型中，把气体和砂粒作为研究对象，并且将它们都看作连续的流体。
- Touch the ohmmeter probes to the two wires sticking out of the dry sand. 将欧姆表探针连接到插入干燥沙子中的两条电线上。
- Looking up from under the Shapotou, who took the sand flow, "Fei Liu thousand feet down," such as from heaven. 从沙坡头下仰望，人乘沙流“飞流直下三千尺”，如从天降。
- In case of fire, use sodium carbonate or dry sand (never use water). 着火时使用碳酸钠或干沙子灭火（禁止用水）；
- Dry sand at the scene of thionyl chloride liquid and cover to cover. 现场用干沙对氯化亚砜液体进行覆盖和遮掩。
- To overcome it, a developed technology was to inject artificial gravels into oil formation to make the gravel screen to prevent sand flow. 为此研制出地层深部充填防砂技术,该技术是向油层中注入人工砾石,由其所形成的砾石屏蔽来阻挡地层出砂。
- Several mud and sand flow accidents occurred from the goaf to mining face,which had seriously affect to the mine safety production. 梅河四井为急倾斜特厚煤层,采用水平分层综合机械化放顶煤开采,曾经多次发生采空区泥砂流溃入工作面事故,严重影响了安全生产。
- Dry sand absorbs water. 干沙吸收水份。
- Sand flow of water and sand as the proportion of different trajectories and the flow of sand from the line, could accelerate the occurrence of cavitation. 含砂水流由于水与砂的比重不同，砂粒运动轨迹与流线脱离，可能会加速汽蚀的发生。
- A mass of dry sand placed within a mold to provide openings or shape to a casting. 型芯铸造模型中为铸件提供出口和形状的干沙块
