Second Moment [数] 二次矩 ; 次级偶甩 ; [数] 二阶矩 ; 随即而来的第二层运动
Angular Second Moment 二阶距 ; 角二阶矩 ; 能量
second moment norm 二阶矩范数
First Order Second Moment 第一阶第二次矩 ; 一次二阶矩
second moment of mass 惯性极矩 ; 质量二次矩
First-order Second-moment Method 一次二阶矩法
linear second moment 线性二阶矩
second moment matrix 二阶矩矩阵
second-moment criterion 二阶矩准则
transformed second moment 第二个转变时刻 ; 第二个瞬间转换
That may sound odd, but the fact is at the moment of the Big Bang, both matter and anti-matter were created for a short time, and I mean just a fraction of a second.
这听起来可能很奇怪，但事实是在大爆炸的那一刻，物质和反物质都是在很短的时间内被创造出来的，我的意思是只有几分之一秒。
The second option also involved going over to the shelf but, this time, removing the book and then subtly holding onto it for just an extra moment before placing it in the customer's hands.
第二种选择是走到书架前，但是这次，把书拿开，然后稍微多拿一会儿，再把书放到顾客手中。
The second attack was so serious that his airway swelled, preventing him from breathing, his blood pressure dropped suddenly, and his heart stopped for a moment.
第二次发作很严重，他的气道肿胀，无法呼吸，血压突然下降，心脏停了一会儿。
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