1) ultrasonic echo intensity
超声回波强度
1.
Influencing factors in ultrasonic echo intensity and clinical ultrasonic imaging;
超声回波强度的影响因素及临床声像图问题研究
2) ultrasound intensity
超声波强度
3) acoustic radar echo amplitude
声雷达回波强度
4) low intensity ultrasound
低强度超声波
1.
Study on Bio-effects of Activated Sludge Irradiated by Low Intensity Ultrasound and Its Application;
低强度超声波辐射活性污泥的生物效应及其应用试验研究
2.
The mechanism of biological activity enhancement of sludge by low intensity ultrasound was investigated based on the sludge characteristics before and after ultrasonic treatment, the impact of different ultrasonic treatment patterns, as well as the effect of addition of the radical scavenger NaHCO3.
通过测定超声辐射前后污泥性质的变化,不同处理方式对污泥活性影响以及自由基清除剂NaHCO3加入对超声作用效果影响,初步探讨了低强度超声波辐射对污泥生物活性的影响机制。
3.
This work aims to study the enhancement effects of low intensity ultrasound on biological wastewater treatment in low temperature.
本研究还以典型的城市二级处理污水处理厂和采用SBR工艺的污水处理厂为例,对低强度超声波在污水处理工艺中的设计和操作进行了说明。
5) ultrasonic echo
超声回波
1.
Image signal carried by ultrasonic echo is valuable information in diagnose.
超声回波中所加载的图像信号是诊断中所需要的有价值的信息,鉴于超声波本身在人体中传播和衰减的特性,超声回波的接收和放大电路直接影响超声图像的质量,在超声仪器中占有重要地位,本文就其中的部分功能电路作了说明与分析。
2.
Based on the principle of sand particle falling, a new method using the ultrasonic echo technique has been introduced for analysing particle sias.
基于泥沙的沉降特性，本文利用超声回波技术，提出了一种新的泥沙颗分方法，经对沙样的实际比测表明，超声颗分具有重复性好，无接触测量，连续自动采样且不受泥沙色度的影响等特点，为泥沙的颗粒分析提供了新的途径。
3.
Firstly, the basic principles of EMD decomposition method and neural network were introduced in this paper, ultrasonic echo signal was analyzed in time domain and frequency domain by EMD, and then the parameters of time and frequency domain characteristics were analyzed and summarized.
本文首先介绍了EMD分解方法和神经网络的基本原理,利用EMD对超声回波信号进行了时域和频域的分析,归纳分析了回波信号在时域和频域的特征参数,在此基础上分析了神经网络输入特征参数的选择原则以及如何选取部分时、频域特征参数作为神经网络输入,并得出了较理想的特征参数组合。
6) high strength ultrasonic
强超声波
1.
On the self-designed ultrasonic dispersing experiment equipment,the method of surface modification in high strength ultrasonic field was adopted to treat the self-made nanometer WS2 particulates,to improve nanometer WS2 particulates\' dispersion stability in lubricating oil.
结果表明,强超声波作用下,纳米WS2颗粒团聚体明显变小,分散稳定性显著提高,再经表面修饰,颗粒表面羟基与表面修饰剂发生作用,大量长链亲油基团取代表面羟基而吸附在颗粒表面,形成位阻层,有效地防止了颗粒的碰撞团聚和重力沉降,使纳米WS2颗粒在润滑油中形成了一个均匀且稳定的分散体系,而且在强超声场下进行表面修饰时,表面修饰剂的最佳用量为0。
补充资料：表光合强度(见光合强度)
表光合强度(见光合强度)
forecast of sowing or transplanting time
b iaoguanghe qiangdu表光合强度见光合强度
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