1) disappear of echo
回波消失
3) P wave disappear
P波消失
1.
5mmol/L,ECG showed shape of tent appears high T wave,two were symmetrical,QRS complex wave increased the wide deformity,unstable intraventricular block,Q-T interval prolong,sino P wave disappeared,sino-ventricular conduction,P-R interval was prolong,R-Rinterval was nent torelatively spa.
5 mmol/L时,心电图出现帐篷样高尖T波,两支对称,QRS波群增宽畸形,不定位心室内传导阻滞,Q-T间期延长,窦性P波消失,窦室传导,P-R间期延长,R-R间期相对匀齐,心动过速酷似房室交接区心动过速或室性心动过速。
4) evanescent waves
消失波
1.
It indicates that the evanescent waves phenomena are becoming more important in physical optics research recently.
指出近年来的研究显示了消失波现象的重要性,例如消失波可造成超光速传播,且常有新方法和新测量结果;介绍了物理光学在相关领域的技术创新和应用实例;讨论了光子有静止质量的可能性及光频标准和光频测量的历史和新的进展。
5) evanescent wave
消失波
1.
The expression of evanescent wave function is derivated,the phenomena of ATR!and the principle of measuring refractive index of liquid using SPR sensor are introduced.
推导了消失波函数的表达式,介绍了衰减全反射现象及SPR传感器测量液体折射率的原理,并利用SPR传感器测量了牛奶样品的反射系数及折射率与脂肪等主要成分含量的关系曲线。
2.
When the frequency is below than the cut-off frequency of the waveguide, the field intensity decays exponentially with distance along the waveguide and the wave is called evanescent wave.
当频率低于波导的截止频率时，电磁波在波导中与距离成指数规律衰减，是一种消失波。
6) evanescent wave field
消失波场
1.
The eletric field distribution of a LP 01 mode and properties of the evanescent wave field in a hollow optical fibre under the weakly guiding approximation are analysed.
用弱导光纤近似,分析了空心光纤的场分布和消失波场特性,得出了色散方程并进行了数值计算。
补充资料：边界回声
边界回声
boundary echo
器官、组织或病灶的边界处回声。可观察被膜(包膜）有无、厚薄、钙化等，有无粘连，边缘是否光滑、规则或清晰等。观察边界回声对疾病诊断具有重要价值，尤其对鉴别良性和恶性肿瘤作用更显著。
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