| 释义 |
ci-s 英'sɪs美'sɪs COCA³¹⁵¹¹¹⁺⁴
基本英英
=calculus index score 牙石指数记分,=simplified calculus index 简化牙石指数
名词 cis:
an alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991
名词 ci:
a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second |