- hard calculus
- 硬牙石含有高百分比的钙化物质
Medical Chinese dictionary (湘雅医学词典). 2013.
hard calculus
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Calculus — A stone, as in the urinary tract. Also, the calcium salt deposits on the teeth. The word calculus in Latin means a pebble. Pebbles were once used for counting, from which came the mathematical field of calculus. A urinary calculus is a pebble in… … Medical dictionary
Calculus (dental) — Heavy staining and calculus deposits exhibited on the lingual surface of the mandibular anterior teeth, along the gumline. In dentistry, calculus or tartar is a form of hardened dental plaque. It is caused by the continual accumulation of… … Wikipedia
calculus — /kal kyeuh leuhs/, n., pl. calculi / luy /, calculuses. 1. Math. a method of calculation, esp. one of several highly systematic methods of treating problems by a special system of algebraic notations, as differential or integral calculus. 2.… … Universalium
calculus — n.; pl. calculi 1) a stone: a hard pebble like mass formed within the body, particularly in the gall bladder (see gallstone) or anywhere in the urinary tract (see cystolithiasis, nephrolithiasis, staghorn calculus). Calculi in the urinary tract… … The new mediacal dictionary
calculus — cal•cu•lus [[t]ˈkæl kyə ləs[/t]] n. pl. li [[t] ˌlaɪ[/t]] lus•es 1) math. a method of calculation, esp. one of several highly systematic methods of treating problems by a special system of algebraic notations, as differential or integral calculus … From formal English to slang
Professor Calculus — (Professeur Tournesol) Publication information Publisher Casterman (Belgium) … Wikipedia
The Calculus Affair — (L Affaire Tournesol) Cover of the English edition Publisher Casterman … Wikipedia
Non-standard calculus — Abraham Robinson Contents 1 Motivation … Wikipedia
phosphate calculus — phosphatic calculus a urinary calculus composed of a phosphate such as brushite, struvite, or whitlockite; it may be hard, soft, or friable, and so large that it may fill the renal pelvis and calices … Medical dictionary
brushite calculus — a hard, light colored phosphate calculus composed of brushite … Medical dictionary
dental calculus — a hard, stonelike concretion, varying in color from creamy yellow to black, that forms on the teeth or dental prostheses through calcification of dental plaque. According to location, there are two general types: supragingival c. and subgingival… … Medical dictionary
