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chelotropic reaction螯键反应Cheanomeles speciosa木瓜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