3) ultrasonic
[英][,ʌltrə'sɔnɪk] [美]['ʌltrə'sɑnɪk]
超声振荡
1.
Through orthogonal experimental design,the preparation of iron oxide nanometer particles by ultrasonic-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。
4) 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 of ultrasonic 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。
5) ultrasonic surge
超声振荡
1.
0 nm has been prepared with the sol-gel method,and use ultrasonic surge.
用溶胶-凝胶法以超声振荡方式制备出粒径为37。
6) 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 under ultrasonic 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 by ultrasonic 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。
补充资料: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。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条