1) Superradiance
[sju:pə'reidjəns]
超辐射
1.
The relativistic backward wave oscillator(RBWO) based on superradiance(SR) mechanism is becoming a new technical scheme of compact high power microwave system owing to its generation of nanosecond or subnanosecond pulse with high peak power,high peak conversion efficiency and fast leading edge.
基于超辐射机理相对论返波管能产生高峰值功率、高峰值转换效率、快速上升前沿的纳秒/亚纳秒微波脉冲,正成为高功率微波源系统小型化的新技术途径。
2.
A novel backward wave oscillator based on the superradiance mechanism is designed in this paper.
设计了一种基于超辐射机理的X波段相对论返波管结构,利用全电磁2。
3.
It is found that the frequency creep caused by superradiance usually results in this kind of limit cycle like oscillations.
分析表明这种类极限环振荡主要起因于超辐射引起的频率蠕变 。
2) superradiation
[sju:pə,reidi'eiʃən]
超辐射
1.
7×10-48cm4·s /photon at 1064nm,but exhibits a high superradiation efficiency.
实验研究了这种新化合物的双光子吸收,双光子吸收引起的频率上转换发射,双光子泵浦的上转换超辐射性质。
3) ultrasonic irradiation
超声辐射
1.
Soup-free emulsion polymerization of n-butyl acrylate by ultrasonic irradiation;
超声辐射丙烯酸丁酯无皂乳液聚合
2.
The core-shell Ag-Ga/polymethyl methacrylate nanoparticles were prepared by the emulsion polymerization method under ultrasonic irradiation in-situ without any initiators or metal reducer.
在不加任何引发剂和金属还原剂的条件下,超声辐射双原位引发乳液聚合制备纳米银镓合金/聚甲基丙烯酸甲酯(Ag-Ga/PMMA)复合粒子。
3.
The use of ultrasonic irradiation in the presence of PTC for organic synthesis is well documented.
使用超声辐射及相转移催化剂,采用活性基团亚结构连接接法,由反式桂皮酸(即3-苯基烯丙酸)出发,经酰化、异硫氰酸酯化,与4,6-二取代嘧啶加成等多步反应制备了9种N-′(4,6-二取代嘧啶-2-基)-N-桂皮酰基硫脲(4a~4i),其结构经IR、1H NMR、元素分析测试技术得到确证。
4) ultrasound irradiation
超声辐射
1.
Synthesis of aromatic aldehyde and ketone thiosemicarbazones in aqueous solution under ultrasound irradiation;
超声辐射水溶液中取代芳醛、芳酮缩氨基硫脲的合成
2.
Solvent-free Knoevenagel condensation reaction under ultrasound irradiation,noncatalyst;
超声辐射下的无溶剂Knoevenagel缩合反应
3.
Changes of bFGF protein and mRNA in vulva skin of rabbit after ultrasound irradiation;
超声辐射兔外阴皮肤后组织中bFGF蛋白和mRNA的变化
5) ultrasonic radiation
超声辐射
1.
Ultrasonic radiation precipitation preparation and luminescence characterization of nanometer Y_2O_3∶Eu~(3+);
纳米Y_2O_3∶Eu~(3+)超声辐射沉淀制备及其性能研究
2.
Effect of ultrasonic radiation on unsaturation degree of fatty acids of Platymonas subcordiformis;
超声辐射提高亚心形扁藻脂肪酸不饱和度研究
3.
Synthesis of novel diphenylacetyl-aroylthioureas under ultrasonic radiation
超声辐射下合成二苯羟乙酰基硫脲
6) ultrasound
[英]['ʌltrəsaʊnd] [美]['ʌltrə'saund]
超声辐射
1.
The reaction of oximes with benzyl bromide catalyzed by benzyldimethyltetradecylammonium chloride was carried out at room temperature for 30～60 min in aqueous sodium hydroxide solution under ultrasound irradiation to give O-benzyloxime derivatives in 60%～96% yields.
在超声辐射和苄基十四烷基二甲基氯化铵作用下,肟和苄基溴在NaOH水溶液中于室温反应30～60min,肟苄基醚的收率60%～96%,反应时间短,收率高,对环境友好。
补充资料：超辐射
分子式：
CAS号：
性质：自发发射通过布居反转介质一次后产生的放大作用，它与真正的激光作用的不同之处在于它不具备相干性。该术语也常用于激光技术中。
CAS号：
性质：自发发射通过布居反转介质一次后产生的放大作用，它与真正的激光作用的不同之处在于它不具备相干性。该术语也常用于激光技术中。
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