查询词典 transducer

Although the swept-scan technique is currently employed in high-frequency ultrasound systems, the continuous transducer movement may have nonnegligible effects on accuracy of velocity estimation.

虽然扫掠式扫瞄已应用於目前的高频系统，然而探头的连续移动对於流速的估计有著不可忽略的影响。

Algorithm of nonrespirable dust fraction suppression using an optical transducer of dust mass concentration.

基于平均质量的悬浮颗粒物的质量密度算法。光学学报， 2007， 27(9)： 1706～1710

Algorithm of nonrespirable dust fraction suppression using an optical transducer of dust mass concentration.

光学学报， 2007， 27(9)： 1706～1710 顾芳，杨娟，卞保民，贺安之，&粒子计数器测量悬浮颗粒物质量浓度的计算模型&，中国光学快报 6，

Parasternal long axis and abdominal aorta long axis images were acquired by a 15MHz high-frequency linear ultrasound transducer at 4 weeks and 8 weeks after operation, respectively.

术后4周、8周采用飞利浦HDI5000超声诊断仪、15MHz：高频线阵探头，经胸骨旁左室长轴切面及腹主动脉的长轴切面进行检测。

A 2. 5～5. 5 MHz transducer was used according to the acoustic depth of the heart examined. Group B was used x-ray fluoroscopy (a Philip mono-rotatable C arm X-ray equipment) as image guide with routine method reported by american college of cardiology cardiovascular technology assessment committee. TTE guiding CSC in site: The guide wire was inserted into left subclavicular vein and inferior vena cava and it was displayed clearly by TTE. The sheath could be displayed clearly too by TTE. CSC was put through the sheath into right atrium in prone position and was thoroughly showed by TTE via untypical parasternal four-chamber view.

本研究对60例心内电生理检查患者，应用TTE作为影像学引导的可行性和临床应用的方法学进行了探讨，并对5只犬TEE引导射频导管消融术时大头电极导管到位的可行性进行了动物实验研究，具体为：(1)专用冠状窦电极导管置放时TTE引导的可行研究；(2)普通电极导管置放时TTE引导的可行研究；(3)专用冠状窦电极导管和普通冠状窦电极导管置放时TTE的对比研究：(4)TTE引导His束电极导管和右室电极导管到位的临床应用研究；(5)TTE在心内电生理检查中的应用研究；(6)TEE引导射频导管消融术大头电极导管到位的实验研究。

Later, under the untypical parasternal four-chamber view which can thoroughly display the ostium of coronary sinus, the catheter was promoted further to the ostium of coronary venous sinus. Then the echocardiography technician adjusted the transducer of TTE in order to thoroughly confirm the position of the catheter tip. After confirming the position of catheter tip in the coronary venous sinus, the operator inserted the catheter into the coronary venous sinus for 3～4 mm farther. It was noted that if resistance was encountered by operator, the operation must be stopped, which was the same as x-ray fluroscopy as image guiding. TTE guiding His bundle elactric cahteter、high right atrium electric cahteter and right ventricular electric catheter in site: It is difficult using TTE singly since there are too many crossroads in inferior venous.

本研究结果显示，(1)单独应用TTE作为影像学引导进行冠状窦电极导管置放的成功率为93.8％～96.7％，并且应用TTE作为影像学引导放置专用冠状窦电极导管和普通电极导管的成功率和放置时间在统计学上无显著差异；(2)TTE作为影像学引导，除过度肥胖患者外，可完全替代X线引导进行冠状窦电极导管置放，包括鞘管和扩张管的放置、指引导丝在静脉而非动脉内的证实均可由TTE完成引导，且较X线C型臂有一定优越性；(3)TTE结合普通X线胃肠透视机作为影像学导引，可顺利完成心内电生理检查时导管的安全到位，而不需昂贵的X线C型臂，可将心内电生理检查扩大到广大的基层医院；(4)TTE较X线更易和更早期发现介入治疗的并发症如急性心包填塞等，对并发症的防治甚至挽救病人的生命至为重要；(5)动物实验研究表明，TEE可引导射频导管消融术时大头电极导管成功到位。

Key Words:Perioral pressure, Pressure transducer, Facial deformity, head posture??

关键词牙弓两侧肌肉压力压力传感器颌面畸形头位？？

The photoelastic fiber optic force transducer is designed to measure the pressure of deep wells and bottoms of storage tanks.

光弹光纤压力传感器主要是针对在深井和大型油罐底部的应用而设计的。

Considering the construction and working progress of this transducer,the reasons of temperature shift are analysised,a simple compensation method and a corresponding com- putation method are introduced.

本文从该传感器结构与工作原理出发，分析了输出温漂的成因，并针对实际生产的情况，提出了一种简便的补偿方案，给出了相应的计算方法。

These models use a simulated input transducer that vibrates purely sinusoidally with a fixed frequency.

这些模型采用一个模拟输入探头，以完全正弦波的形式按固定频率振动。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。