The relationships between the zero-shear viscosity η 0 and polymer concentrations ρ p,between the constants K and n in Meter's equation and polymer concentration ρ p were established.
水解聚丙烯酰胺 (ＨＰＡＭ )盐水溶液流变曲线在整个切变速率的范围内存在 3个区域 :在很低的剪切速率 (ｖｓ)下是牛顿流体 ;在极高的剪切速率下也是牛顿流体 ,它们的黏度是一个定值 ,与剪切速率无关 ,分别称为零切黏度 (η0 )和上极限黏度 (η∞) ;在二区域之间为非牛顿性假塑性流体 ,溶液黏度无定值 ,属表观黏度 (ηａ) ,三者间有 η0 >ηａ>η∞[6 ] 。
The equations of zero-shear viscosity and non-newtonian index were deduced based on the experiment data.
通过在线流变实验研究分析了聚苯乙烯/CO2溶液的流变行为,并由实验推导出了不同工艺条件下零剪切黏度η0以及非牛顿指数n的计算公式。
In combination with a modified zero-shear viscosity equation of polymer solution,the normal force exerted on sucker rod can be given.
采用数值分析方法,模拟了抽油机井杆管偏心环空内采出液的速度场,并推导了抽油杆表面的速度梯度差,结合修正的聚合物溶液零剪切黏度公式,给出了抽油杆所受的法向力。
The calculation of melt shear rate, jet stretch ratio and spinneret back pressure was analyzed and discussed, which decided the diameter and L/D ratio of spinneret.
分析了涤纶长丝生产中喷丝板选用的相关理论 ,对熔体的切变速率、喷丝头拉伸比、喷丝板背压的计算方法进行分析讨论 ,认为 3个参数可作为选择喷丝板微孔直径和长径比的依据 ,并举实例进行了验
In continuous cooling expeliments the apparent viscosity of the sheared slurry increases with the increase in solid fraction and cooling rate,and decreases with the increse in shear rate;In isothermal experiments,the apparent uis-cosity decreases with the increase in isothermal holding thine,arriving at a "steady state" value after around 1000 seconds.
利用同轴双筒流变仪研究了半固态Al-10％Cu合金的流变行为,发现在连续冷却试验中,被剪切半固态合金浆液的表观粘度随着固相分数以及冷却速度的上升而增加,随切变速率的上升而下降;在等温试验中,其表观粘度随等温时间的上升而下降,大约1000s后达到“稳态”值。
The dependences of rheological properties on concentration, temperature and shear rate have been investigated experimentally for the water -based sols of hydroxyethyl zaorenjiao (i.e. the gum from Chinese honey locust bean).
研究了羟乙基皂仁胶水溶胶体系的粘度对浓度、温度和切变速率的依赖性。
A STUDY OF RHEOLOGICAL PROPERTIES OF MOLTEN POLYETHYLENE TEREPHTHALATE--Part Ⅱ:Rheological Properties of PET Melt at High Shear Rate
聚酯熔体流变性能的研究——高剪切速率下熔体的流变性能
maximum wind and shear chart
最大风速和风切变图
The rate of change of velocity with respect to time.
加速度速度相对于时间变化的速率
The ratio of the magnitude of an applied shear stress to the velocity gradient that it produces; that is, a measure of a noncrystalline material's resistance to permanent deformation.
剪切应力数值与其产生应变速率的比值叫粘性，用来衡量非晶材料抵抗永久变形的能力。
(mechanics) the rate of change of velocity.
（机械学）周转变化的速率。
automatic data rate changer
自动数据速率变换器
(physics) a rate of change of velocity.
（物理）周转变化速率。
maximum momentary speed variation
最大瞬时转速变化率
Changing the rate of cylinder rotation changes the speed selected.
改变圆筒旋转速率就改变被筛选的速率。
The frequency, wave length, and speed of sound are closely related.
频率，波长和声速三者是密切相关的。
Let' s take the metal removal rate for example.
让我们以金属切削速率为例。
The rotating cylinder with spiral grooves acts as a speed selector.
螺旋切口的旋转圆筒作为速率筛选器。
Studies on the Mechanics Behaviour of Joints under Different Shearing Velocity;
不同剪切速率下节理的力学特性研究
Study of Handover Policy for High-Speed Packet Traffic in WCDMA;
WCDMA中高速率分组业务的切换策略研究
Study on Melt Viscosity of PP and FEP/PP Blends at Low Shear Rates
PP及FEP/PP低剪切速率下熔体粘性研究
The adiabatic shear bands of U-5.7Nb at high strain rate
高应变率下U-5.7Nb合金的绝热剪切变形
and the tan dynamic contact angles is linear to the displacing velocity in higher velocity.
较高驱替速率时,动态接触角的正切与驱替速率的对数呈线性关系;