San francisco - - for the first time , scientists have proof in human subjects that a derivative of an ingredient in red wine combats some symptoms of aging 三藩市-科学家首次发现一种红酒提取物对人体有抗衰老作用。
Fad ( flavin adenine dinucleotide ) a derivative of riboflavin that is a coenzyme in electron - transfer reactions 黄素腺嘌呤二核苷酸（ fad ） ：核黄素的衍生物，在电子传递反应中是一种辅酶，它作为各种脱氢酶的辅助基团起作用。
Or a contract to hedge the weather risks affecting crop prices , rather than the future prices of those crops , would also be considered a derivative 用于观察气候风险对谷物的价格影响而非这些谷物的期货价格也被认为是一种衍生工具。
A derivative is a financial instrument whose value depends on the price of an underlying instrument , such as currencies , commodities or securities 衍生工具就是一种金融工具，其价值取决于基础工具的价格，比如货币、商品或有价证券。
A letter or symbol in typography written above a set name to denote a power or a derivative , or to identify a particular element of that set 在印刷技术中,写在一个集合名上方的一种字母或符号,用来表示乘方或导数,或用来标记该集合中的某个具体元素。
The automatic differentiation available just can handle a derivative unit . usually , the code of a derivative unit just includes fixed composition 现有的自动微分工具通常只能处理一个微分单元的微分，一个微分单元的代码通常只包括固定的组成结构。
The purchase or sale of a derivative security ( such as options or futures ) in order to reduce or neutralize all or some portion of the risk of holding another security 指买入或卖出一种衍生证券(如期权或期货)以对冲部分或全部所持其它证券风险的行为。
Insider trading - a derivative of the securities market , has been brought into full play with the growth and development of the securities market since its initial establishment 内幕交易作为证券市场的一种衍生物，从证券市场建立之初，就伴随着证券市场的成长与发展而兴风作浪。
We study the existence problem of fourth - order boundary value problems with a derivative term using upper and lower solution method . then we give an application of our results 摘要利用上下解方法，研究了含导数项的四阶微分方程边值问题的解的存在性，给出了所获结果的一个应用。
Part ii : litigation elements of the share - holder ' s derivative action this part explains the two litigation elements for the share - holder to stand as initiatives to a derivative action 第二部分股东代位诉讼的诉讼要件本部分探讨内容包括原告股东适格条件与起诉前之必要条件两项。
