Chekan.<俄>契卡("肃反委员会"的俄语缩略语)
ChEabbr.化学工程师(=chemical engineer)
Chebychev inequality切比雪夫不等式
Chesniella mongolican.蒙古旱雀豆
Cheilosoria fragilisn.脆叶碎米蕨
chevaux-de-frise防栅
CHEBYCHEV polynomial切匹雪夫多项式
Cheyne's respiration
Chelation adsorption螯合吸附
Chekland methodology切克兰德方法论
chelating extraction螯合萃取
Cheletropic addition钳合反应