超声波振荡,ultrasonic oscillation
1)ultrasonic oscillation超声波振荡
1.By using ammonium phosphotungstste (NH4)3[PW12O40], diammonium hydrogen phosphate (NH4)2HPO4 and self-MCM-41 as the raw material, tungsten phosphide (WP) and MCM-41-supported WP catalysts (WP/MCM-41) were prepared by temperature-programmed reduction with H2 underultrasonic oscillation.以磷钨酸铵、磷酸氢二铵和自制的MCM-41为原料,采用超声波振荡、程序升温和高纯氢气还原的方法制备了高比表面积的WP和WP/MCM-41,用XRD、BET、BJH、SEM和EDX表征了所制备的催化剂,考察了晶化时间、原料配比、超声波振荡等因素对MCM-41分子筛制备的影响;考察了载体、负载量、浸渍液pH值、超声波振荡、反应温度和反应时间等因素对催化剂的加氢脱硫活性的影响;并对噻吩的催化加氢脱硫反应的产物进行了分析。
2.The heat cured sand of Al-Mg-B compound phosphate inorganic binder was modified byultrasonic oscillation to binder and adding organic polymer YPPJ while mixing of sand.采用对所研制的粘结剂进行超声波振荡及混砂时加入有机高聚物YPPJ对铝镁硼复合磷酸盐铸造粘结剂热硬砂进行改性。
英文短句/例句
1.ultrasonic generator超声波振荡器超声波发生器
2.Study on application of ultrasonic oscillator in the continuous countercurrent spiral extracting apparatus超声波振荡器在连续逆流螺旋浸取设备中的应用研究
3.Broad Tuning Ultra Low Phase Noise Dielectric Resonators Oscillators可调谐Ku波段超低噪声介质振荡器研究
4.sound surface wave pressure control oscillator声表面波压控振荡器
5.sound surface wave frequency-modulated oscillator声表面波调频振荡器
6.Analysis of Oscillatory Occurrences in the Liquorices Solution about the Wave Velocity of the Ultrasonic along with Solution Concentration甘草稀溶液中超声波波速随溶液浓度的振荡现象分析
7.Influence of Mechanical Oscillation and Ultrasonic Radiation on Gas-Liquid Mass Transfer Performance in Oscillatory Reactor机械振荡和超声波对摆式反应器气液传质性能的影响
8.ultrasonic mode changer超声波振动模式变换器
9.rouse ultrasonic viscometer振子式超声波粘度计
10.Study on ultrasonic-assisted electroless nickel plating and performance of deposit超声振荡辅助化学镀镍及其性能研究
11.Design of Ultra Low Phase Noise LC VCO超低相位噪声LC压控振荡器的设计
12.Endotoxin deactivation in artificial glass root canals with ultrasonic treatment超声振荡对于模拟根管内毒素的灭活作用研究
13.For very high frequency clocks, a surface acoustic wave (SAW) oscillator is preferable.对于非常高的频率时钟，用声表面波振荡器更好。
14.Hot firings show that the frequency of the oscillating shock is close to the acoustic frequency.热试结果表明，振荡激波的频率与声频相近。
15.Analysis on Factors Affecting Frequency Stability of SAW Oscillators影响声表面波振荡器的频率稳定性因素分析
16.Impact of Phase Noise in Reference Oscillator on PLL基准振荡器相位噪声对载波锁相环的影响
17.A Ka-band GaAs MHEMT VCO MMIC with Low Phase NoiseKa波段低相位噪声GaAs MHEMT单片压控振荡器
18.Extraction of BHC and DDT Residues in Tea by Ultrasonic Vibration茶叶中六六六、滴滴涕残留的超声波震荡提取法
相关短句/例句
supersonic oscillation超声波振荡，超声波振动
3)ultrasonic vibration dyeing超声波振荡染色
4)supersonic oscillator超声波振荡器
5)ultrasonic[英][,?ltr?"s?n?k][美]["?ltr?"sɑn?k]超声振荡
1.Through orthogonal experimental design,the preparation of iron oxide nanometer particles byultrasonic-solid phase reaction was studied.研究了纳米氧化铁颜料的制备工艺,采用超声振荡和固相法相结合的方法合成纳米氧化铁。
6)ultrasonic vibration超声振荡
1.The optimum conditions were as follows:PVA 3g,H_2O 20mL,H_2SO_4 8g,ultrasonic vibration 80min,reaction temperature 55℃.利用超声振荡,聚乙烯醇(PVA)与硫酸进行酯化反应制备聚阴离子膜材料。
2.The use ofultrasonic vibration in acetic acid extraction of Ca2+ from wollastonite increased obviously the extraction ratio of Ca2+ ion.研究了超声振荡技术应用于乙酸萃取硅灰石时的钙离子萃取率。
延伸阅读
超声超声UltrasofliCS是指超出人耳听力范围的高频声(频率超过20000Hz）。超声具有与一般声音共同的物理性质，还具有一些其他重要的物理特性，如能够成束发射，直线传导，方向性好。传导过程中遇有声阻抗不同的反射界面时产生反射、折射、聚焦和散焦等现象。用于临床诊断的超声频率一般为2～7.5MHz。频率越高，对组织结构的分辨力越强，但远场声能容易被组织吸收、衰减，不易穿透较深的层次。
