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。

youdao

The source of the virus, the exact time of its introduction into Fort Dix, and factors limiting its spread and duration are unknown.

至于病毒的源头、传入迪克斯堡的准确时间、及局限其传播的因素和时段均不明确。

youdao

Serpent Spread - Targets hit by your Multi-Shot are also afflicted by your Serpent Sting equal to 6/9 sec of its total duration.

毒蛇散播-被你的多重射击击中的目标都会受到毒蛇钉刺的影响6/9秒效果的影响。

youdao

We assess that the underlying factors fueling the spread of the movement outweigh its vulnerabilities and are likely to do so for the duration of the timeframe of this Estimate.

NPR: Both Parties Find Ammo in Threat Summary