Chekan.<俄>契卡("肃反委员会"的俄语缩略语)
ChEabbr.化学工程师(=chemical engineer)
chelating surfactant螯合性表面活性剂
Cheilosoria insignisn.厚叶碎米蕨
Chebyshev projection契比雪夫投影
Chelipoda guizhouanan.贵州鬃螳舞虻
Chelidonura inornatan.无饰燕尾海牛
chebyshev polynomial切比雪夫多项式,车比雪夫多项式
Cheyletiella yasguri牙氏姬螯螨
chelating flocculant螯合絮凝剂