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Under optimal conditions: reaction temperature 80-90 ℃,V ∶V 4-5 ,linear flowrate of C4 raffinate 0.45-0.55 mm/s, conversion of isobutene can ...

试验结果表明，异丁烯催化逆流水合制叔丁醇的适宜操作条件为：反应温度80~90℃，水油体积比为4~5，抽余C4烃的流速为0.45~0.55mm/s。

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

数值模拟结果表明，(1)在涡轮达到工作转速时，在分级区域形成了一个与涡轮旋转方向相反的局部回流涡，它使得分离出来的细粒重又被带回分级轮外边缘，从而严重影响分级机的分级效率；(2)粉尘粒子在涡轮低速运动情况下，基本上能跟随气体运动，但随着转速加大，两相之间出现了明显的速度滑移现象；(3)分级机工作时的风量也是一个比较重要的操作参数，它可以直接影响到分级机内腔流场的稳定性，风量越大，流场越稳定；(4)同直叶片形状相比较，带后弯导板的叶片，有利于改善流场的稳定性，流场容易形成整体流，对提高分级效率和分级精度都非常有利；(5)粒子轨迹线在涡轮转速较高时十分复杂，有的出现了反复的弹跳现象，大颗粒不能通过分级区域而从进口返流了，只有细小的颗粒才从出口处流出；(6)涡轮转速加大时，粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象，颗粒越小，脉动程度越为剧烈。

The influences of three instrumental parameters of ICP-MS spectrometer(radio frequenceypower, nebulization gas flowrate and ion lens voltage)on signal intensity and productivity of a few kinds ofions formed from 15 rare earth elements in the plasma(single element ions RE+,oxide ions REO+,hydroxideions REOH+ and hydride ions REH+)have been investigated.

研究了电感耦合等离子体质谱法的仪器主要参数(射频功率、雾化气流量、离子透镜电压)对15种稀土元素的离子、氧化物离子、氢氧化物离子和氢化物离子信号强度及各多原子离子产率的影响，并对各稀土元素多原子离子产率与各稀土元素性质的关系进行了探讨。

So research is conducted on how to change the conventional jet effect, enhance the rock-breaking efficiency, lower the flowrate coefficient, and form instantaneous underpressure.

它改变了传统的喷射作用，将连续射流转变成瞬间脉冲射流，降低了流量系数(0.6~0.8)，增强了破岩效率，在保护钻头、增强井底清洗效果、提高机速等方面优势明显。

Various methods to measure outgassing rate were summarized including the pressure rising rate collecting,weighing and gas flowrate.

总结了材料放气测试的各种方法：压力上升率法、收集法、称重法和气体流量法。

The effects of rheological characteristics, orifice diameter, chamber volume and gas flowrate on bubble formation were discussed.

讨论了流体流变性质、喷嘴直径、气室体积和气体流率对气泡生成的影响。

And the output of the sensor is less dependent on the flow regime. 7. The helical phase concentration sensor designed has been used in the coal puffing system of the 3# blast furnace in Bao Gang to measure in-situ the coal concentration of the main pipe. Combined with the capacitance velocity sensor, the instantaneous mass flowrate of the pneumatic conveying coal is obtained.

在实验室条件下对螺旋形状表面板电容式相浓度传感器的理论优化结构进行了实验验证，对边保护极板提高检测场中心区域灵敏度的作用也进行了实验验证，静态实验结果与理论计算结果相符，传感器检测场的均匀性误差为4.18%，输出线性度好，对流型变化不敏感。

Some atomizers with multi jets were investigated for the application purpose of Electrostatic Spray at high flowrate.

为了使静电雾化在大流量时能够应用，本文研究了具有多股射流的某些喷咀。

Because the crank is connected with the shaft through the flat key and the shaft is fixed onto the valve plate with the pin, thus the valve plate is driven to turn in the valve body so as to change the flow area of the pipeline change to regulate the flowrate of the medium.

由于曲柄通过平键与轴连结，。轴与阀板用销子固定，从而带动阀板在阀体内回转，使管道流通面积变化，达到调节介质流量。

Based upon study of the gas flowrate changes of filler under various filling rates, submersion depth ,microporous and single orifice aeration ways,different aeration density and other conditions the hydraulics characteristics of HSL aerobic biological fluidized bed is studied,which provide good references for optimization design of HSL aerobic biological fluidized bed and similar reactors.

通过研究HSL好氧生物流化床在不同填料填装率、不同曝气水深、微孔曝气与单孔曝气两种不同的曝气方式、不同曝气密度等条件下的填料流气量，揭示了其水力学特性，从而为优化HSL好氧流化床及类似的反应器水力学流态提供有益的参考。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48