Chekan.<俄>契卡("肃反委员会"的俄语缩略语)ChEabbr.化学工程师（=chemical engineer）Chebyshev polynomails契贝谢夫多项式Cheilosoria hancockiin.大理碎米蕨chell flow comparator壳式流动比测器cheilitis grandularis腺性唇炎Chelonopsis forrestiin.大萼铃子香Chelonopsis bracteatan.具苞铃子香Chebycheff inequality切比雪夫不等式Chelipoda fuscicornisn.褐角鬃螳舞虻chelating resin tower螯合树脂塔Che linea prendo?