1) vortex band
涡流层,涡区
2) vortex plane
涡面,涡[流]层
3) vortex sheet
涡流层,涡面
5) stratospheric polar vortex
平流层极涡
1.
Arising from the debate upon the breaking time of the stratospheric polar vortex in boreal spring, an observational study of the relation between stratospheric polar vortex breakdown and the boreal extra-tropical circulation was performed in this paper.
针对以前研究中北半球平流层极涡崩溃时间的分歧,本研究首先确定了北半球平流层极涡在春季的崩溃时间,并分析了在平流层极涡崩溃过程中的环流演变和波动活动特征。
6) vortex of nozzle
涡流剪切层
1.
Based on a 1/15 model wind tunnel of the Shanghai Automotive Wind Tunnel Center,an experimental study is made of the buffeting phenomenon of open-jet wind tunnel on the basis of three limiting configurations in charge of the vortex of nozzle(source of noise),feedback of collector and the structure of plenum,respectively.
对于本模型风洞来讲,产生低频颤振的耦合因素主要是:喷口剪切层涡流激发了驻室Helmholtz共振;喷口剪切层涡流频率与全回路声学模态发生耦合;涡流剪切层及其收集口尖劈反馈共振,构成气流自激系统。
补充资料:“质子-电子偶极-偶极”质子弛豫增强
“质子-电子偶极-偶极”质子弛豫增强
物理学术语。原子核外层中不成对的电子质量小,但磁动性很强,可使局部磁场波动增强,促使氢质子弛豫加快,从而使T1和T2缩短,这种效应即为PEDDPRE。过渡元素和镧系元素大部分在d和f轨道有多个不成对电子,所以其离子往往具有PEDDPRE,可用来作顺磁性对比剂,如钆(Gd)。Gd在外层有7个不成对电子,具有很强的顺磁性。
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参考词条