1)suction hole出流孔
1.Heat transfer enhancement within an internal passage by combinations of ribs and suction holes内冷通道带肋和出流孔壁面的换热研究
2.Measurement of suction holes discharge coefficients (Cd) in an internal passage with rib turbulators and suction holes are presented.在根据相似理论放大的模型上,测量了带肋壁与出流孔内流通道中沿主流流向分布的各出流孔的流量系数Cd。
英文短句/例句
1.Analysis of changes of pressure before the orifices in laterals under low pressure drip irrigation低压滴灌小孔出流孔前压力变化研究
2.Effect of rib turbulator orientation and bleed hole location on flow character肋角度和出流孔位置对流动特性的影响
3.Heat transfer enhancement within an internal passage by combinations of ribs and suction holes内冷通道带肋和出流孔壁面的换热研究
4.Heat Transfer Investigation of Internal Passage in Trapezoidal Ducts with Ejection Through the Suction Holes带侧向出流孔的梯形通道内部换热特性实验
5.The water drained out of the hole in the pail.水从桶的孔里流出来。
6.The valve shown has a pilot and a bleed orifice.该阀具有控制孔和流出孔。
7.Characteristics of vertical sharp-edged orifice discharge(Ⅲ) Effect of geometry on orifice discharge coefficient垂直锐边孔口的自由出流特性(Ⅲ)孔几何形状对孔流系数的影响
8.To excrete perspiration through the pores of the skin.出汗，流汗通过皮肤上的毛孔排泄汗液
9.(of a person,his face,his actions,etc)show(emotion,etc)（指人、人的面孔、动作等）显出,流露（情绪等）
10.The density P is that of the fluid escaping from the orifice.上式中p是从小孔喷出的流体密度。
11.They tapped the sugar maples and the sap began to flow.他们在糖枫树上开孔，树汁便流出了。
12.A sea of faces betrayed their grief.无数面孔的表情流露出内心的悲伤。
13.It is the porosity due to interconnected pores that can be filled with and emptied of water.这种孔隙率是水可流出和流入的连通空隙。
14.Flow Characteristics in Passages with Rib-Turbulators and Film-Holes' Extractions;带肋壁与气膜孔出流通道的流动特性研究
15.Aerodynamic Investigation of Flow Characters of Internal Cooling Channel with Both Rib-roughened Walls and Film Hole Suctions;有肋和气膜孔出流的通道内流动特性研究
16.Effects of air injection on outlet flow field of compressor cascade孔隙射流结构对扩压叶栅出口流场特性的影响
17.Aerodynamic Investigation of Flow Fields in the Channel with Ejection/Injection Through the Holes on the Wall;有出流和入流的通道和孔内流场的实验和数值模拟研究
18.Attend to after the cranium holes double-barrelled drainage treats the old age skill of cerebral hemorrhage颅钻孔双管引流治疗老年性脑出血的术后护理
相关短句/例句
Large orifice discharge大孔出流
1.The results showed the gating system which is according to proportional solidification, the large orifice discharge theory with blind feeder and iron chill has avoided defects of heavy ductile iron castings.简述了某一曲轴连杆铸件的结构特点,采用顺序凝固理论和均衡凝固理论设计两种工艺方案,通过对比,结果表明,运用大孔出流,均衡凝固理论设计的浇注系统,采用暗冒口配合冷铁工艺,可以有效解决厚大球铁件生产中的铸造缺陷。
2.Considering of the problems exist in practice,large orifice discharge principle is employed to study the pressure distribution of ring runner system,the even ablity for discharging of gates,the relationship of flow with the position of sprue and the type of gates.根据生产中存在的问题 ,用大孔出流理论研究了环形横浇道系统的压力分布、内浇道出流均匀性及流量与直浇道引入位置和内浇道引入方式之间的关系 ,提出了圆形铸件环形横浇道系统新的设计思
3.In the paper,based on the Propotional Solidification Theory and Large Orifice Discharge Theo- ry,the foundry technology of gray iron casting shell was designed by the method of CAD.论文根据均衡凝固及大孔出流理论,用计算机辅助设计的方法改进了壳体灰铸铁件的铸造工艺。
3)outflow from orifice孔口出流
1.Analysis on parameters of limiting height of aspiration for density current outflow from orifice;异重流孔口出流极限吸出高度分析
4)hole of sluice gate闸孔出流
1.3-Demesion water-air Two-Phase Numercial Simulation on Outflow in the hole of sluice gate;闸孔出流水气二相流三维数值模拟
5)taphole['t?ph?ul]流出孔
6)orifice flow锐孔流出;孔板流出
延伸阅读
孔口出流 流经挡水壁上孔口的水流。常见的孔口形状为矩形和圆形。当孔口高度e与孔口水头H（上游水面至孔口中心的高度）之比时为小孔口；当时为大孔口（图1）。当孔壁厚度不影响孔口出流时为薄壁孔口；反之为厚壁孔口。水利工程中常见的闸门下泄流称为闸孔出流（图2）。 为保证闸孔出流，e/H必须小于或等于0.65,否则闸门下缘脱离水面而成为堰流。当下游水位不影响泄流量时为自由出流(图1a、图2a);反之为淹没出流（图1b、图2b）。胸墙挡水时的堰顶溢流和坝体短孔泄流等亦属孔流。孔口自由出流的流量为： 式中A为孔口面积；g为重力加速度;为孔口总水头，其中H为孔口水头，v0为孔口上游行近流速，α为动能校正系数(见水流能量方程);┢＝εφ为孔口流量系数,其中ε＝Ao/A为孔口收缩系数(Ao为孔口收缩断面C-C的面积)，φ为孔口流速系数,与孔口对水流的阻力有关。对于薄壁圆形小孔口，ε＝0.63～0.64，φ＝0.97～0.98，μ＝0.60～0.62。 当下游水位触及孔口底缘时，流态即有改变，下游水位高于孔口上缘时为孔口淹没出流(图1b)。孔口淹没出流的流量为： 式中ｚ为孔口上下游水位差；μs为孔口淹没出流流量系数。 闸孔自由出流的流量为： 式中B为闸孔宽度；e为闸孔高度；为闸孔总水头,H为闸孔水头(上游水面至闸底板的高度);μ＝ε′φ为闸孔流量系数；h0=ε′e为闸孔收缩断面C-C的水深。其中为闸孔垂向收缩系数,与有关；φ为闸孔流速系数，与闸孔形式有关。对于宽顶堰（见堰流）上平面闸门下的闸孔：当＝0～0.65时，ε′=0.611～0.673，φ＝0.85～1.0。 当闸孔下游水深 t大于收缩断面水深ho的跃后水深hc2（见水跃）时为闸孔淹没出流。其流量为： Qs=σQ 式中Q为H及e值相同时的闸孔自由出流流量；σ为考下游水位影响的闸孔淹没系数，与(t-hc2)/(H-hc2)有关。 参考书目 华东水利学院编：《水力学》，第2版,下册，科学出版社，北京，1983。 武汉水利电力学院编：《水力学》，水利电力出版社，北京，1960。
