Most high frequency (...

临床上常规的超声成像对甲状腺结节进行诊断时存在误诊和漏诊。研究了利用多种采集频率的长焦区聚焦换能器进行光声成像的方法。在......

JAK(Janus kinase)/STAT(signal transducer and activatior of transcription)信号途径能够介导多种细胞因子和生长因子的细胞内......

The creep properties of optical fiber used in fiber optical sensors were studied in this paper. A low co- herent white l......

With the aim to enhance the energy conversion efficiency of the rainbow shape piezoelectric transducer, an analysis mode......

This paper presents a transimpedance amplifier(TIA) capacitance detection circuit aimed at detecting micro-capacitance, ......

In response to a stimulus,a soft material deforms,and the deformation provides a function.We call such a material a soft......

Inflammatory bowel disease(IBD)includes two similar yet distinct conditions called ulcerative colitis(UC)and Crohn’s di......

STAT3是信号传导和转录激活因子(signal transducer and activator of transcription,STAT)家族的成员之一,在肿瘤的发生发展过程......

Considerable progress has been made in active noise control (ANC) in the recent decade. Compared with the conventional ......

To improve the automation level of the vehicle drive axle test and better simulate a vehicle′s actual operation, an adv......

本文报道了一种磁场检测灵敏度为10~(-5)Oe量级的光纤弱磁传感器。文中提供了传感头与检测系统的设计理论和方法。 In this paper......

We report a fiber Bragg grating(FBG)vibration transducer based on an equal strength cantilever with enhanced sensitivity......

An optimized transducer prototype with a sandwich structure vibrated longitudinally is proposed for a transmitter in aco......

<正> 笔者对常规习用的测量血压方法测量血压时可能发生的一些问题,进行了如下研究: 受试者计48名(男25,女23;年龄17～67岁),均系自......

We report an electrodeposited poly(pyrrole-co-pyrrolepropylic acid) copolymer modified electroactive graphene-carbon nan......

介绍了变频调速的基本原理及泵和管网的基本特性,对变频器控制水泵的节能原理作了分析,并以RH回水系统工程为例,介绍了变频器在RH......

在分析火电厂燃料重调机运行特性的基础上，采用变频控制技术对传统的运行方式进行改造，解决了高惯量、大转矩负载启动，多台电机同步驱......

和优化方法的边界元素理论被用来计算在水下的声学的投射的一个保角的数组的开车电压 weighting 向量获得 low-sidelobe 的变换器......

The transmitting models of ultrasonic vibration in ultrasonic transducer and capillary were presented according to the p......

为了改善激光声信号的特性,设计了激光声换能器。对换能器的设计原理和结构进行了说明。构建了激光声实验系统,利用脉冲激光分别在......

This paper introduces the seismic physical modeling technology in the CNPC Key Lab of Geophysical Exploration. It includ......

详细介绍了便携式超声波流量计的工作原理,指出便携式超声波流量计是检测的一种重要手段,通过分析便携式超声波流量计的安装和重要......

The boundary element theory together with the optimization method is used to calculate the driving voltage weighting vec......