secyn.秘书SECadj.(香槟酒等)无甜味的abbr.第二的(=second)；（=U.S. Security and Exchang Commission） 美国证券交易委员会Secobarbital measurement司可巴比妥测量Secchi disc transparency叶绿素αSEC Probes Hedge Fund InSecurinegco suffruticosa叶底珠secchi disk transparency透明度Securities Exchanges Act证券交易法securitization of credit信贷资产证券化secant integral function正割积分函数Secchi rs classification塞齐分类法securities communication证券通信