临界游速,critical swimming speed
1)critical swimming speed临界游速
1.Thecritical swimming speed, tail-flip speed, swimming endurance, the physiological response after swimming fatigue and the effects of temperature, salinity and body length on thecritical swimming speed of Chinese shrimp, Fenneropenaeus chinensis, whiteleg shrimp, Litopenaeus vannamei, and kuruma shrimp, Marsupenaeus japonicus were studied.本研究以中国明对虾(Fenneropenaeus chinensis)、凡纳滨对虾(Litopenaeus vannamei)和日本囊对虾(Marsupenaeus japonicus)为研究对象,研究了其临界游速、弹跳速度、游泳耐久性、游泳疲劳后的生理反应及水温、盐度、体长对其临界游速的影响。
2.4) cm·s-1 (means±SD),critical swimming speed(Ucrit) and tail-flip speed of Litopenaeus vannamei [body length (6.3)℃条件下,测定了凡纳滨对虾(Litopenaeus vannamei)的临界游速(Ucri)t、弹跳速度、不同流速下的可持续游泳时间,以及游泳疲劳后的生理反应。
2)critical flow rate临界流速
1.The result indicates thatcritical flow rate at the beginning of sand production declines with the rising of oil viscosity and pH value of fluid; when pH value exceeds 12, sand production increases remarkably.研究结果表明,开始出砂的临界流速随原油粘度以及流体pH值的升高而下降;当pH值超过12以后,出砂量显著增大。
2.The results indicate that critical salt concentration andcritical flow rate exit on the saltwater-freshwater interface.试验结果表明,咸淡水界面上存在临界盐浓度值和临界流速值,当入流溶液浓度达到临界盐浓度和流速达到临界流速时,都会产生颗粒释放现象,导致砂柱的渗透率下降,水敏性发生。
3.Thecritical flow rate,VT could be estimated from the statistic curves.从统计曲线上估算了临界流速的大小,当流速超过上述临界值时,管线服役寿命不会超过2年;临界流速从时的4。
英文短句/例句
1.Study on the Critical Speed of Settling Slurry in Horizontal Pipeline;沉降性浆体水平管道临界流速的研究
2.Stability and Critical Flow Velocity Analysis of Pipes Conveying Fluid with Intermediate Support;具有中间支承输流管道稳定性和临界流速分析
3.The Research of the Critical Velocity of Sewage Flowing as Two-Phase Fluid in City Drainpipe;城市排水管道内污水两相流临界流速研究
4.STABILITY AND CRITICAL FLOW VELOCITY ANALYSIS OF PIPES CONVEYING FLUID WITH INTERMEDIATE SUPPORT具有中间支承输流管道稳定性与临界流速分析
5.Analysis of critical flow velocities of pipe conveying fluid under relaxation of boundary conditions固定约束松动对输流管道稳定性和临界流速的影响
6.Stability and Critical Flow Velocity Analysis of a Clamped Pipe Conveying Fluid with Intermediate Support一端固定具有中间支承输流管道临界流速及稳定性分析
7.Effect of Condition Parameters of Gas Drilling on Critical Flow Rate of Material Discharge气体钻井分离设备液体排料临界流速的影响因素分析
8.Minimum fluidization velocity of bimodal polyethylene particles双峰聚乙烯颗粒临界流化速度的研究
9.Mechanics model of critical annular velocity for cuttings transportation in deviated well斜井岩屑运移临界环空流速力学模型
10.Correlation of critical mass velocity has been provided.文中还给出了临界质量流速的试验关联式。
11.Rapid Determination of Nicotinamide by SFC;超临界流体色谱快速测定烟酰胺的含量
12.Mass Flow Rate Profile and Metal Temperature Calculation in Water Wall of an Supercritical Circulating Fluidized Bed Boiler at Medium Mass Flow Rate超临界循环流化床锅炉中等质量流速水冷壁流量分配及壁温计算
13.torsional critical speed扭转临界速度 -电机的
14.critical cooling rate马氏体临界冷却速度
15.critical rotational speed离心机临界振动转速
16.The Research of Red Phosphorus Microencapsulation Flame Retardant Made by Using RESS Process;超临界流体快速膨胀法制备红磷微胶囊阻燃剂的研究
17.Study on Optimal Velocity of Transcranial Doppler in Diagnosis of Middle Cerebral Artery Stenosis;经颅多普勒超声评估大脑中动脉狭窄的最佳血流速度临界值
18.Paeonol Extraction from Cortex Moutan with Supercritical Fluid Extraction and High-Speed Counter-Current Chromatography超临界CO_2萃取-高速逆流色谱分离纯化丹皮中丹皮酚
相关短句/例句
critical flow rate临界流速
1.The result indicates thatcritical flow rate at the beginning of sand production declines with the rising of oil viscosity and pH value of fluid; when pH value exceeds 12, sand production increases remarkably.研究结果表明,开始出砂的临界流速随原油粘度以及流体pH值的升高而下降;当pH值超过12以后,出砂量显著增大。
2.The results indicate that critical salt concentration andcritical flow rate exit on the saltwater-freshwater interface.试验结果表明,咸淡水界面上存在临界盐浓度值和临界流速值,当入流溶液浓度达到临界盐浓度和流速达到临界流速时,都会产生颗粒释放现象,导致砂柱的渗透率下降,水敏性发生。
3.Thecritical flow rate,VT could be estimated from the statistic curves.从统计曲线上估算了临界流速的大小,当流速超过上述临界值时,管线服役寿命不会超过2年;临界流速从时的4。
3)critical velocity临界速度
1.The predicted pressure drop per unit length was compared with the experiments as a result that acritical velocity at which the wall slip begins was obtained and that the relationship .计算得出水煤浆在管道中流动产生滑移的临界速度,并得到临界速度与管径的变化关系。
2.The dynamic stress, strain and displacement of the windshield are obtained, and thecritical velocity when the windshield failure is also gotten on the FE analysis.并对某型号风挡进行了鸟撞动响应分析,得出了鸟的运动轨迹和风挡的位移、应力、应变响应以及风挡玻璃的鸟撞临界速度,经与试验结果比较,两者吻合较好。
3.In radial ultrasonic grinding, the contacting state is discontinuous and thecritical velocity accords with the existing vibration cutting theory.径向超声振动磨削与纵向超声振动磨削 ,其主要差别是磨粒与工件的接触状态不同 ,在径向超声振动磨削中 ,磨粒与工件的接触是间断性的 ,它的临界速度特征符合现有的振动切削理论 ,而在纵向超声振动磨削中 ,磨粒与工件是永久性接触 ,不存在磨粒与工件表面分离的特点。
4)critical rotating speed临界转速
1.Thecritical rotating speed of vacuum plating Cr under the condition of ensuring plating Cr reliably is educed by analyzing the vacuum plating Cr theory of code disc and radial grating and the film forming mechanism.通过对码盘、圆光栅真空镀铬原理及膜层形成机理的分析,给出膜层厚度和影响其均匀性和致密性的主要因素之间的关系式以及安全成膜时被镀件的临界转速,为真空条件下获得厚度均匀、致密性好的铬膜提供了理论依据。
2.Critical rotating speed, a basis for determining the rigidity and rotating speed of the main axle, is an important parameter in the design and manufacture of woodwork machine tool.临界转速是木工机床设计与制造的一个主要参数，为确定木工机床主轴刚度、主轴转速的依据。
3.Critical rotating speed of vacuum plating Cr was given under the condition of ensuring plating Cr reliably.给出了动态真空镀铬保证安全成膜时被镀件不应超过的临界转速ｎ临，为动态目标盘动态旋转条件下的可靠镀铬提供了理论依
5)critical velocity临界风速
1.Numerical simulation and analysis of smoke characteristics andcritical velocity in underground railway tunnel while fire;地铁隧道火灾烟气特性与临界风速的数值模拟分析
2.Furthermore, acritical velocity of air flow expression for transition from upward smoldering to flaming combustion is constructed.根据在此条件下的阴燃特点,建立了稳定阴燃时实验材料内部的气流速度模型和阴燃向有焰火转化时的临界风速判定表达式。
3.The model for calculating thecritical velocity in a tunnel cross-passage is established on the basis of the critical Froude theory.从临界Froude数理论出发建立了计算联络通道临界风速的模型。
6)critical velocity临界流速
1.The relation of aeration rate with wastewater flow,designed bioreactor height,and flowing section area of main and sub chamber was analyzed theoretically,as well as the relation of thecritical velocity of membrane fouling outside with the internal suction pressure and the width of main chamber.从理论上分析了一体式膜生物反应器内曝气量与污水流量、反应器设计高度、主副腔过流面积的关系,膜外污染错流临界流速与抽吸压力及主腔宽度的关系,膜管内污染的临界速度与膜管径、膜壁吸力的关系,并得出采用化学方法消除膜污染的原理。
2.From the theoretical analysis,it can be seen that the relationship between thecritical velocity of membrane outer surface and suction pressure, the width of cross-flow section and the aeration,the relationship between thecritical velocity of membrane inner surface with or without gel layer and membrane pipe diameter,particle size,suction pressure,flow condition and at.运用气、液、固三相流运动力学原理对一体式膜生物反应器运行过程分析,得出:①反应器膜外污染的临界流速与膜管抽吸压力及主腔宽度、曝气条件的关系;②膜管内膜壁存在或不存在凝胶层条件下,产生污染的临界速度与膜管径、污染物粒径、膜管内抽吸压力、膜管内流态及膜壁对污染物吸附力的关系;③消除膜污染运行控制措施及条件。
3.In view of the fact that raw coal in question is wide in size range, an equation for calculating the friction loss andcritical velocity of this kind of coal slurry has been proposed by using dimensional and regression analysis methods based on over 5000 groups of data actually observed at five typical hydro mines.考虑到原煤粒度分布较宽的特点，在５个典型水采矿井的５０００多组实测数据基础上，通过因次分析和回归方法，得出宽粒度分布煤浆管道输送参数摩擦阻力损失和临界流速的计算公式。
延伸阅读
尾矿输送临界流速尾矿输送临界流速critical velocity of the flow of tailings slurrywelkuang shusong}inJ!e}一usu尾矿输送临界流速(critieal veloeity of theflow of tailings slurry)尾矿浆体由一种流动形态向另一种流动形态过渡的界限流速。临界流速对于尾矿水力输送中输送流速的确定有重要的作用。输送流速低于临界流速，易导致尾矿颗粒淤积甚至堵塞管、槽;过高于临界流速，则输送动力消耗大，管、槽壁的磨损加剧。尾矿浆体多属沉降性浆体。它在水平管、槽中流动时，随着流速的由高到低的变化，阶段性地呈现出伪均质流、悬浮非均质流、有滑动层的非均质流和有沉积层的非均质流四种形态。当浆体流速较高时，尾矿颗粒在断面上的分布基本均匀，呈现伪均质流形态。当浆体流速减低时，尾矿颗粒在断面上的分布开始不均匀，有明显的浓度梯度，呈现悬浮非均质流形态。当浆体流速进 1步减低时，部分较粗或较重的尾矿颗粒沉积到管、槽底部，并以滑动、滚动和跳跃的方式向前移动，呈现有滑动层的非均质流形态。而当浆体流速降低到一定程度，尾矿颗粒在管、槽底部形成时冲时淤的活动底床或稳定的固定底床，此时即呈现有沉积层的非均质流形态。般低浓度的尾矿浆体，其临界流速也可相应地分为均质的、悬浮的和淤积的三种。均质临界流速为伪均质流与悬浮非均质流的界限流速。悬浮临界流速为悬浮非均质流与有滑动层非均质流的界限流速。淤积临界流速则为有滑动层非均质流与有沉积层非均质流的界限流速。在淤积临界流速下输送浆体，其水力坡度(见尾矿输送水力坡度)近于最小。不同阶段的临界流速概念有助于揭示固液两相流的运动规律。但淤积临界流速的概念更具实用性，因此实际工作中把它简称为临界流速。临界流速的计算方法很多，常用的有杜兰德(R.Durand)、瓦斯普(E.J.wasp)、尤芬(八.r工.。巾。H)、克诺劳兹(B.c.K，，opo。)和柯别尔尼克(C .1’.Ko6叩阴K)等人的公式。但这些公式的使用都有其局限性和近似性。对于重要的工程，如长距离的大、中型的尾矿水力输送系统，必要时应通过试验确定临界流速，以确保可靠性和降低能耗。中国选矿厂的尾矿水力输送临界流速多采用克诺劳兹公式计算，其公式为:(z)当口‘镇0 .o7mm时 VI~o·2夕(1+3 .43c昌“SDF‘875)(2)当0 .07匕己p簇0.15mm时 V，一O·255月(1+2.4sC吕“33刀尸25)式中d。为尾矿加权平均粒径，mm;Vl为矿浆临界流速，m/s;D，为临界管径，m; Cd为矿浆质量稠度又100;召为尾矿密度修正系数，按下式计算:月一(几一l)/x.7;z‘为尾矿密度，g/em3。
