超声的

Ultrasound is sound that has a frequency above the audible range of man that is greater than 20 kHz.

超声是一种声波，在医学影象中，超声仪使用2MHz-10MHz间的声波，此一频率已远远超过人耳所能听到的20kHz。

This paper introduces a band-pass filter circuit which is used in Time Gain Compensation of medical ultrasonic endoscope imaging system.

根据内窥超声成像系统的要求，设计一种用于超声增益补偿中的改进结构带通滤波电路。

Intrauterine phantom pregnancy bursa is one sign of ultrasonography in diagnosis of ectopic pregnancy.

宫内无孕囊是超声诊断异位妊娠的征象之一，超声鉴别宫内假孕囊是避免早期异位妊娠误诊的关键。

Objective To explore the clinical efficacy of focused ultrasound for patients with chronic cervicitis,as well as its safty and feasibility.

目的 探讨聚焦超声治疗慢性宫颈炎的临床疗效，评价聚焦超声治疗的有效性、安全性及可行性。

With the multiple spectrum character of the ultrasonic generator, an impedance model of ultrasonic transducer under the triple frequency harmonic is built.

本文利用超声电源的多频谱特性，推导出超声换能器在谐振频率三次谐波下的阻抗模型。

The x-ray features mainly showed the multiple and iterative fractures and concrescence abnormality, osteoporosis, and thinner cortical bone.

先天性成骨不全影像学表现具有特征性， X线、超声是诊断先天性成骨不全的重要方法，超声为产前诊断胎儿骨骼发育异常的首选方法。

The continuous ultrasonic test for curve surface was realized by exact control parameter.

通过误差补偿，为计算机控制超声探头进行曲面检测提供准确的控制参数，实现曲面形工件的连续超声检测。

To the authors's knowledge, no study has been reported on the relationship between the dimensional changes of muscles obtained by sonography and the corresponding joint angles.

我们把超声扫描肌肉时得到的动态超声图像以及从中得到的动态信号称为"声肌图"，简写成SMG。

Ultrasound parameters of calcaneus was measured by ultrasound bone densitometer following investigation exercise modes and durations.

采用超声骨密度仪测试跟骨超声参数，即反映骨密度的超声波衰减系数和反映骨强度的跟骨骨质量指数。

The left ventricular internal dimension at end diastole, interventricular septal thickness at end diastole and left ventricular posterior wall thickness at end diastole were measured in the parastemal long axis view by transthoracic two-dimensional echocardiography, and to calculate left ventricular ejection fraction with Teichholtz formula and left ventricular mass with modified Devereux formula, left ventricular mass index=LVM/body surface area. From the apical four chamber and two chamber view, the basical segment and middle segment of interventricular septal, left ventricular lateral wall, anterior wall and inferior wall were obtained by tissue Doppler imaging, Regional left ventricular relaxation asynchrony index was calculated.

应用二维超声心动图在胸骨旁左心室长轴观测量左心室舒张末期内径、室间隔和左心室后壁舒张末期厚度，采用Teichholtz公式计算左心室射血分数，采用Devereux校正公式计算左心室心肌质量，左心室心肌质量指数=左心室心肌质量/体表面积；在心尖四腔心和心尖两腔心切面，应用组织多普勒成像获取室间隔、左心室侧壁、前壁和下壁的基底段和中间段8个心肌节段沿左心室长轴运动的速度频谱，测算左心室局部心肌松弛不同步性指数(regional left ventricular relaxation asynchrony index， AI)；在心尖四腔心切面，应用彩色M型多普勒超声心动图测量左心室舒张早期血流传播速度。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。