The results show that the pressure loss in the generating process is mainly resulted from the section shrinkage.
结果显示,在超高压水射流形成过程中,压力损失主要是在水流从高压管道进入高压喷嘴时由于流道发生断面收缩而造成的,压力损失大约为最终超高压水射流动能密度的49%;随着喷嘴口径的增大,压力损失减小,整个系统的能量利用率越高;随着水射流压力的增大,压力损失增大,但增大的程度会减小。
The scope of contracted section,the length of the main current core,the transverse velocity and concentration are given.
分析近区流场和浓度场的特征,得出了下游近区中线流速、浓度和稀释度的沿程变化规律,收缩断面变化范围,以及主流核和高浓度区的长度,也得出了流速和浓度在横断面上的分布状态,并分析和讨论了相对动量、相对扩散器长度对这些特性的影响。
According to the testing and studying,ultimate strength,elongation and shrinkage on cross section of two kinds of steel bar were determined.
通过测试研究还得到两种钢筋的极限强度、延伸率和断面收缩率等其他高温力学性能参数。
The brittleness temperature I of Q235G was 1300℃ to melting point and the brittleness temperature III 750~850℃, the range of brittleness temperature III was narrow, and the minimum reduction of area about 48%.
测试结果表明,Q235G钢铸坯的高温强度较小,600℃时抗拉强度约164MPa,屈服强度和抗拉强度均随测试温度降低而增大;铸坯具有良好的塑性,脆性区温度范围较窄,第I脆性温度范围为1300℃至熔点,第III脆性温度范围为750~850℃,在850~1250℃内,该钢种连铸坯的断面收缩率均大于85%。
By analyzing the states of two samples and smelting and rolling process, it was found out that the essential reason resulting in area reduction disqualification of Steel 45 was flake.
通过对45钢两种试样状态及冶炼、轧制工艺的分析,找出了白点是导致45钢断面收缩率不合的根本原因,钢中氢含量高是内因,轧后冷速过快是外因。
Forming principle of heavy section shrinkage cross wedge rolling by single wedge
楔横轧一次楔大断面收缩率成形机理
RESEARCH OF IMPROVING THE REDUCTION OF AREA OF SWRH82B WIRE ROD
提高大规格SWRH82B线材断面收缩率研究
Analysis on rolling stability of heavy section shrinkage cross wedge rolling
大断面收缩率楔横轧稳定轧制问题分析
An Approximate Calculation Formula of Contracted Water Depth in Free Flow Circular Cross-section
无压流圆形断面收缩水深的近似计算公式
Research of Percentage of Area Reduction of Quench & Temper Wire Applied to Auto Damping Spring
汽车减震弹簧用油淬火回火钢丝断面收缩率分析
Experimental study on internal defect of heavy section shrinkage workpiece under one cross wedge rolling
大断面收缩率一次楔入轧件心部缺陷的实验研究
Analytical Solution of Water Depth in Parabolic-Shaped Channel with Contracted Section
抛物线形断面渠道收缩水深的解析解
reduction in area
(挤压后) 断面减缩率
Below 4 c, water is in expansion instead of continuous contraction.
水在4℃以下就不断地膨胀，而不是不断地收缩。
Evaluating the Value of Postsystolic Shortening in Diagnosis of Coronary Artery Disease by Strain Dopple Echocardiography;
应变超声成像评价收缩后收缩对冠心病的诊断价值
To unbend the arm other muscles in the back of the arm have to shorten.
要伸直手臂，背面的肌肉就得收缩。
(used of the skin of the face) contracted into wrinkles.
（用于面部皮肤）收缩成皱纹的。
The dough shrank slowly in the cold air.
面团在冷空气中慢慢收缩了.
Way for improving the plastic shrinkage of wharf surface concrete
改善码头面层混凝土塑性收缩的方法
(pathology) constriction of a body part so as to cut off the flow of blood or other fluid.
身体某一部分的收缩以切断血液的流动。
Interface capturing method for inviscid-incompressible flame discontinuities
一种无粘不可压缩火焰面间断的界面捕捉方法
garment shrinkage
服装收缩,成衣收缩
boil-off shrinkage
精练收缩[率],退浆收缩[率]