单词 | seismograph |
释义 | seismograph[ sahyz-muh-graf, -grahf, sahys- ] / ˈsaɪz məˌgræf, -ˌgrɑf, ˈsaɪs- / nounany of various instruments for measuring and recording the vibrations of earthquakes. Origin of seismographFirst recorded in 1855–60; seismo- + -graph OTHER WORDS FROM seismographseis·mo·graph·ic [sahyz-muh-graf-ik, sahys-], /ˌsaɪz məˈgræf ɪk, ˌsaɪs-/, seis·mo·graph·i·cal, adjectiveWords nearby seismographseismic wave, seismic waves, seismism, seismo-, seismogram, seismograph, seismography, seismol., seismology, seismometer, seismonasty Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for seismographBritish Dictionary definitions for seismographseismograph / (ˈsaɪzməˌɡrɑːf, -ˌɡræf) / nounan instrument that registers and records the features of earthquakes. A seismogram (ˈsaɪzməˌɡræm) is the record from such an instrumentAlso called: seismometer Derived forms of seismographseismographic (ˌsaɪzməˈɡræfɪk), adjectiveseismographer (saɪzˈmɒɡrəfə), nounseismography, nounCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for seismographseismograph [ sīz′mə-grăf′ ] An instrument that detects and records vibrations and movements in the Earth, especially during an earthquake. Most seismographs employ a pendulum mounted within a rigid framework and connected to a mechanical, optical, or electromagnetic recording device. When the Earth vibrates or shakes, inertia keeps the pendulum steady with respect to the movements of the frame, producing a graphic record of the duration and intensity of the Earth's movements. Separate instruments are needed to record the north-south horizontal, east-west horizontal, and vertical components of a tremor. By comparing the records produced by seismographs located in three or more locations across the Earth, the location and strength of an earthquake can be determined. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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