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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Experiments [1, 2] have revealed a transition accompanied by an appreciable enhancement of pulsations whose period is twice that of the driving vibrating tape.
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Results are given of experimental investigations of heat transfer under conditions of forced convection of highly subcooled water in a smooth pipe and with an internal twisted tape under asymmetric heating.
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The technique for measuring distortions is described, and the results of measurements are presented for several films cut from different sections of a standard piece of double-sided tape with a length of ~7 m and a useable width of ~20 cm.
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The standard plastic base of the tape under investigation is 190 μm thick; ~50-μm-thick layers of diluted PX3 emulsion-gel are applied to its opposite sides.
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The trigger system of the detector and the conditions for recording "charged" and "neutral" events on a magnetic tape are described.
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| | This paper introduces the result of comprehensive studies concerning the techniques for geosound observation and the mechanism of the precursory geosound. In order to get coni nuous and reliable geosound data. the 4-channel,lowspeed tape recorder and other instru ments were developed for registering the extremely small earthquake. 8 years of continuous field observational recording has proved that the instruments are both stable and practical.In order to locate the geosound sources. standard geosound ... | | 本文论述我国地声观测技术和前兆地声机制综合研究的成果.为了获得连续可靠的地声信息,研制了3种适用于地声极微震观测记录仪器,建立了两个标准地声台网,建立了全国地声数据处理中心,并研制了地声资料处理程序包.在上述工作基础上进行了8年的连续观测和全面的基础研究,包括:地震的前兆地声的特征、地声源定位、地声频谱、声源参数、脉冲型地声和连续型地声的发射机制等.另外还研究了并对地声记录的影响、强干扰背景下微弱地球物理信号提取方法和地声在煤矿岩爆预测中的应用. | | 文摘来源 | | Seismic trace gathering has been being the most troublesome in data processingand the quality control of data acquisition. Cornplicated variation of surface condi tions makes the trace gathering very difficult because various field layouts are oftenused for a single seismic line and there randomly occur densified shots, Waste shotsand useless traces. Hence, I recommend two new methods for layout note data list ing and for good trace gathering. In software design and application, interactive op eration and m... | | 长期以来,地震道集的编排一直是资料处理和采集质量监控中最繁琐的工作。在复杂地区进行野外采集,由于地表条件的变化,一条测线上往往使用频繁变化的多种观测系统,并且不定点的加密炮、无效炮、无效道的分布也是随机出现,给道集编排工作带来许多困难。本文提出一种对野外实际观测参数和数据进行登录的新方法及一种准确、高效的道集编排方法。在软件系统设计及实现中,采取交互操作和交互检视的方法,同时考虑内有资源的优化利用,使软件系统能适应低内存档次的微机运行环境。使用道集表数据库代替常规的道集带形式,使得野外队在没有现场处理机的条件下,用普通微机也能进行炮观测参数登录和道集编排工作,从而使野外队在采集结束后能以软盘形式向处理中心提交直接用于资料处理的全部基础数据。实践证明,本文的方法具有直观明了、准确、高效地完成复杂地区野外观测参数登录和道集编排工作的能力,可适应于野外采集的多种变化。 | | 文摘来源 | | The paper introduced the field recording system for the data of deep seismic sounding completed on STM-PC microcomputer series, including the A/D conversion and data acguisition for the seismic recordings of analog tapes. Through the study of time-scale singnal acquisition, six-sound singnal proceeding, analog plagback circuite improvement and acquisition rates, etc. the experience of conducting A/D conversions with high quality is obtained. Upon statistical data the precision is analysed on the basis... | | 本文介绍了STM-PC微机系列上实现的地震测深资料现场收录系统,其中包括对模拟磁带地震记录进行A/D转换、数据采集等。在研究中,对时标信号的采集方式、六响报时信号处理、模拟回放电路的改进与采集速率等方面进行了试验,为高质量地进行A/D转换取得了经验。本文是以海城震区的实际资料为基础,对A/D转换的精度与效果进行了统计与分析,结果表明,该收录系统对模拟地震记录的A/D转换精度达到了规范要求。该收录系统与一般微机系列兼容,适用于我国目前使用的几种模拟磁带地震记录仪。 | | 文摘来源 | |   | | << 更多相关文摘 |
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