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- Can sand flow upward in the hourglass? 时光会倒流吗
- 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。
- 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。
- 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。
- 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。
- The tidal sand ridges in the East China Sea and the sand ridges in the Celtic Sea are all large-scale and deep water sand ridegs on open continental shelf, and were formed in the postglacial sea level rise period. 东海潮流沙脊与凯尔特海沙脊均为开阔陆架上的大型深水沙脊,它们都形成在冰后期海面上升时期。
- My company's principal products are : emery cloth, water sand, dry sanding paper, ribbons, cloth belt, "Bai Jie series" and its isoforms cloth products. 我公司的主要产品有:砂布、水砂、干磨砂纸、纸带、布带、白洁布系列及其异型产品。
- 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。
- alkyd varnish for water sand paper 醇酸水砂纸清漆
- A free flow of water came from the pipe. 水从管道里通畅地流了出来。
- dynamic pressure water sand clay 动压水砂土
- The clear water mirrored the blue sky. 清澈的水中映出蔚蓝的天空。
- Oh, give me a land where the bright diamond sand Flows leisurely down the stream; Where the graceful white swan goes gliding along Like a maid in a heavenly dream. 哦,给我一片地,钻石金沙顺流走;雪白天鹅水中嬉,可是仙女下凡舞?
- After several pumps, the water began to flow. 用泵抽了几下之后,水流出来了。
- Sand and leaves trapped the water in the stream. 沙子和树叶堵住了小河的水流。
- Casing deformation takes place in these geological environments such as plastic rock layer, fault zone, active lithosphere zone, earthquake zone and the place where sand flows. 分析了油井套管损坏的地质环境,指出在塑性岩层、断层、地壳活动、地震活动及油层出砂等地质环境中易造成油井的套管损坏。
- Concrete is made of cement, sand, stone and water. 混凝土是由水泥,砂子石头和水混合做的。
- The nurse diluted the drug with saline water. 护士用生理盐水把药加以稀释。
- Turn the cock to increase the flow of water. 请开大龙头以增加水流量。