| 单词 | calcium carbonate |
| 释义 | calcium carbonate noun[U] chemistryspecializeduk/ˌkæl.si.əm ˈkɑː.bən.eɪt/us/ˌkæl.si.əm ˈkɑːr.bən.eɪt/acommon,whitechemicalcompoundfoundnaturallyaschalk,marble, andlimestone, and inbonesandshells, etc. 碳酸钙Chemicals, chemical compounds & gases
Examplesofcalcium carbonatecalcium carbonate Occasional interbeds of fine-grained carbonate may reflect gravity input of peri-platform ooze, rather than sea-floor preservation ofcalciumcarbonate. From theCambridge English Corpus This finding had considerable public health implications and resulted incalciumcarbonatebeing added to wartime flour in order to prevent rickets. From theCambridge English Corpus Secreted products among the non-pogonophoran annelids range from mucus tocalciumcarbonate. From theCambridge English Corpus Each 30 seeds received 1 ml of inoculum and were pelletized withcalciumcarbonate, just before sowing. From theCambridge English Corpus The primary fossilized mineral(s) arecalciumcarbonateenriched with magnesium. From theCambridge English Corpus They found thatcalciumcarbonatewas usually deposited around the grafted test which then adhered firmly. From theCambridge English Corpus Calcium phosphate appears to be much less soluble thancalciumcarbonatein salt solutions and more complex biological media. From theCambridge English Corpus The carbon dioxide would eventually precipitate ascalciumcarbonateand the hydrogen sulphide would react with iron and form pyrite. From theCambridge English Corpus Thesecalciumcarbonateinclusions must have caused big problems for the medieval potters, because during the firing process they cause cracking of the clay. From theCambridge English Corpus It is worth noting that althoughcalciumcarbonateis rare in both deposits, it is preserved with various colours. From theCambridge English Corpus Continuous, tabular cementstone horizons are composed ofcalciumcarbonate. From theCambridge English Corpus The opposite scenario, in which respiration prevails, could yield a variety of minerals includingcalciumcarbonateas a permanent signature. From theCambridge English Corpus Calcium sulphate, phosphogypsum andcalciumcarbonatein the amelioration of acid subsoils for growth. From theCambridge English Corpus Recent work, however, has led to the theory of canalithiasis34 in whichcalciumcarbonatedebris floats freely in the posterior canal and has a 'plunger' effect when moved under gravity. From theCambridge English Corpus The role of thecalciumcarbonate-calcium phosphate switch in the mineralization of soft-bodied fossils. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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