单词 | specific gravity |
释义 | specific gravity[ spi-sif-ik grav-i-tee ] / spɪˈsɪf ɪk ˈgræv ɪ ti / noun Physics.the ratio of the density of any substance to the density of some other substance taken as standard, water being the standard for liquids and solids, and hydrogen or air being the standard for gases. Also called rel·a·tive den·si·ty [rel-uh-tiv den-si-tee] /ˈrɛl ə tɪv ˈdɛn sɪ ti/ . Origin of specific gravityFirst recorded in 1660–70; the variant relative density was first recorded in 1875–80 Words nearby specific gravityspecifically, specification, specific charge, specific dynamic action, specific epithet, specific gravity, specific heat, specific heat capacity, specific humidity, specific immune globulin, specific immunity Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for specific gravity
British Dictionary definitions for specific gravityspecific gravity nounthe ratio of the density of a substance to that of waterSee relative density Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cultural definitions for specific gravityspecific gravity The mass of a substance, given as a multiple of the mass of the same volume of a standard substance (usually water). The specific gravity of aluminum is 2.70; hence, a cubic foot of aluminum weighs 2.70 times as much as a cubic foot of water. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Medical definitions for specific gravityspecific gravity n.The ratio of the mass of a solid or liquid to the mass of an equal volume of distilled water at 4°C (39°F) or of a gas to an equal volume of air or hydrogen under prescribed conditions of temperature and pressure. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for specific gravityspecific gravity [ spĭ-sĭf′ĭk ] The relative density of a solid or liquid, usually when measured at a temperature of 20°C, compared with the maximum density of water (at 4°C). For example, the specific gravity of carbon steel is 7.8, that of lead is 11.34, and that of pure gold is 19.32. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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