calculus的意思是微積分、微積分學、結石、牙結石、牙垢。
短語搭配：differential calculus微分、integral calculus積分學、renal calculus腎結石、predicate calculus謂詞演算、propositional calculus命題演算。
1、The oral hygiene index was calculated as the sum of the debris and?calculus indices.
口腔衛生指標曾以殘周以及牙垢指數之和計算。
2、In this paper we present a theory about"Q-form Differential and?Integral Calculus".
本文以時、空量子化觀點為指導，提出壹套數學方案，稱為“量子型微積分學”。
3、The second part:Domestic and forelgn high school calculus teaching?present situation analysis.
第二部分，國內外高中微積分教學的現狀分析。