| 单词 | natural cement |
| 释义 | > as lemmasnatural cement natural cement n. a naturally occurring cement; spec. one made by calcining argillaceous limestone. ΘΚΠ society > occupation and work > materials > derived or manufactured material > cement or mortar > [noun] > other kinds of cement or mortar maltha?1440 testacyec1440 putty1472 tarras1612 natural cement1753 Roman cement1768 sand mortar1775 Roman cement1800 Parker's cement1811 mastic cement1815 gauge-stuff1823 Portland cement1824 putty cement1825 rust cement1830 matrix1838 terro-cement1838 rust1839 swish1863 Coaguline1868 albolith1870 dagga1878 mastic1881 tripolith1882 grappier1897 pozzolana cement1905 Ciment Fondu1924 snowcrete1928 soil-cement1936 1753 Philos. Trans. 1751–2 (Royal Soc.) 47 508 The vermiculi marini..are always attach'd to their shells... They are found in groups, adhering together by a natural cement. 1882 Chem. News 27 Oct. 187/2 The chemist to the Geological Survey Department of the Japanese Government, was led to look for a natural cement. Such cements are formed by mixing burnt lime with substances of volcanic origin, generally tufas. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) II. 627/1 Natural cement, a naturally occurring argillaceous limestone, calcined and pulverized, is slower-setting and less uniform in quality than portland cement. < as lemmas |
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