| 单词 | portland cement |
| 释义 | Portland cementor portland cementnouna type of hydraulic cement usually made by burning a mixture of limestone and clay in a kiln. Origin of Portland cementFirst recorded in 1815–25; named after the Isle of Portland, Dorsetshire, England Words nearby Portland cementportio supravaginalis, portio vaginalis, Port Jackson, Port Jackson willow, Portland, Portland cement, Portlaoise, Port Lavaca, Port Louis, portly, Port Lyautey Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for Portland cementPortland cement nouna cement that hardens under water and is made by heating a slurry of clay and crushed chalk or limestone to clinker in a kiln Word Origin for Portland cementC19: named after the Isle of Portland, because its colour resembles that of the stone quarried there 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 |
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