A layer composed of the particle-size composition of characters and symbols is spread on the external surface of the upper margin, used as identified markers.
一层组成的颗粒粒度组成的字符和符号传播，对外部表面的上缘，用来作为识别标记。
2
Both the index duration and the spread duration are the decreasing functions of the discount margin.
利率久期和利差久期都是贴现利差的递减函数。
3
Our results indicate that a ban on margin purchases fosters efficient pricing by narrowing price deviations from fundamental value accompanied with lower volatility and a smaller bid-ask-spread.