delta

noun

1. the 4th letter of the Greek alphabet

2. a low triangular area of alluvial deposits where a river divides before entering a larger body of water

e.g. the Mississippi River delta
the Nile delta

3. an object shaped like an equilateral triangle

1. (河流在入海处形成的)三角洲
A delta is an area of low, flat land shaped like a triangle, where a river splits and spreads out into several branches before entering the sea.

e.g. ...the Mississippi delta.
密西西比河三角洲

1. 避险比率：其计算方式可用下面数学式来表达:实值杠杆=避险比率*名目杠杆,为名目杠杆倍数与避险比率 (Delta) 的相乘积,代表标的股票上涨1%,权证应上涨几%. 例如,名目杠杆倍数为4,Delta为0.5时,则有效杠杆倍数等於2 (= 4 ×0.5),

2. 变化：数据库系统支持循环(Cyclic)、变化(Delta)以及螺旋门(Swinging Door)存贮技术,可以提供当今最具性能价格比的数据存贮解决方案. 同时满足客户对于有损以及无损压缩存贮的需求. 和微软(Microsoft)数据库管理系统(SQL Server)的紧密集成,

3. delta：distributed electronic test and analysis; 分布式电子测试与分析