查询词典 ultrasonic

Based on the analysis and practice of the ultrasonic soldering process, the results show that it is important to procure high soldering quality on controlling submersion depth, the ultrasonic soldering time, assembling clearance and solder composition.

根据对超声波钎焊工艺的分析和实践，结果表明控制产品在钎焊时的浸没深度与产品装配间隙、超声波钎焊时间和钎剂成分是获得高钎焊质量的重要条件。

In this paper,the principle and primary results of measure ultrasonic sound velocity and attenuation coefficient by ultrasonic syntonic method are introduced.

1 前言各种介质的声学特性主要由声速、声衰减、声阻抗等参数来描述，这些量统称为介质的声学特征量。

The effects of several parameters of a digital ultrasonic borehole televiewer on system performance are analyzed, for example, those of the distance measuring error, the crack distinguishability, the side beam of the ultrasonic transducer and the wave propagation attenuation, The distance measuring error depends mainly on the accuracy of time measurement.

本文分析了数字井下超声电视系统中影响系统性能的几个主要参数，其中包括距离测量误差、系统的裂缝分辨力、超声换能器的副瓣影响以及声波的传播损耗等。

The telemetry sub is the core of organization and management of the system,which provides necessary support of software and hardware for data acquisition, processing andtransmission;the ultrasonic imaging televiewer visually presents the condition of interwall ofcasing and the borehole wall;the acoustic caliper quickly and quantitatively detects the status ofinterwall of casing and borehole wall;the azimuth logging tool provides the casing damagelocation demanded by ultrasonic imaging televiewer and acoustic caliper.

遥测短接为该系统的组织管理核心，为各功能短接提供数据采集、处理及传输等所必需的软硬件支持；超声成像仪可直观显示套管内壁或井壁的自然状况，声波井径仪可快速定量检测套管内壁或井壁的状况；方位仪为超声成像仪及声波井径仪提供所需的套损方位。

Ultrasonic cleaning and ultrasonic thickness gauge is only a part of ultrasound technology, there are many areas can be applied to ultrasound technology.

超声清洗与超声波测厚仪仅是超声技术应用的一部分，还有很多领域都可以应用到超声技术。

In order to study with the use ultrasonic wave, the people already designed and have made many ultrasonic generators.

摘要为了研究和利用超声波，人们已经设计和制成了许多超声波发生器。

So the impact of ultrasonic cleaning is clearly recognizable. But to truly understand the value of ultrasonics, one must understand how ultrasonic cleaners really work.

超声波清洗对工业的推动和影响是显而易见的，要真正理解超声波的价值，我们需要进一步了解超声波的原理。

The cleaning machine for ultrasonic wave capillary viscometer works by means of the cavitation of ultrasonic wave in liquid.

超声波毛细管粘度计清洗机是利用超声波在液体中的空化作用来完成的。

To study on extraction of essential oil from Alpinia officinarum Hance by cellulase and ultrasonic, the effects of ultrasonic time, temperature and time of water bath, amounts of cellulase on the extraction efficiency of essential oil from Alpinia officinarum Hance were investigated. And the influence of the four factors was determined by orthogonal experiment.

研究了酶法、超声波辅助水蒸气蒸馏法提取高良姜中的挥发油，对超声时间、水浴温度、酶作用时间、酶用量进行单因素实验分析，在此基础上做正交实验。

Firstly, this paper compares several methods often used to remove scale in industry application, then analyzes and introduces the antiscale mechanism and structure of ultrasonic descaler, and lastly uses detailed cases to verify the antiscale effect of ultrasonic descaler in different environment and usage. The spreading of this product has significant value in environment protection, saving energy, improving efficiency and reducing cost, etc.

本文首先比较了工业生产应用中常用的几种不同的清垢方法，并对超声波防垢器的防垢机理、原理结构进行了分析和介绍，最后通过各种详实的使用案例资料，有效地证实了超声波防垢器在不同环境和用途中的防除结垢效果，其推广价值在环保节能、提高工效、降低成本等诸方面具有广泛的意义。

Besides, railway boasts more advantages to launch logistics comparing with other types of enterprises. By analyzing the necessity and impendency of such transform, the paper discusses from aspect of human reso...

通过分析铁路运输向现代物流转化的必要性和紧迫性，从人才、信息化建设、经营管理、客户关系等方面进行了探讨，提出了相应的实用性建议。

Specifically, Muscat's work -- peer reviewed and completed according to a specific protocol under the WTR -- identified a near tripling in the risk neuroepithelial tumors and a correlation between the side of the head where the phones were used and the side of the head where the tumor was located that were both statistically significant.

具体来说，马斯喀特的工作-同行审查并完成了根据具体的协议下WTR -确定了近三倍的风险和神经肿瘤之间有关联一侧的脑部出现的手机被用来和一侧的脑部出现肿瘤位于这都是统计学意义。