second moment

• 二阶矩

second moment的英文翻译是什么意思，词典释义与在线翻译：

英英释义

Noun:

1. the expected value of the square of the deviations of a random variable from the point of origin

second moment的用法和样例：

例句

1. The parameters of the model are fuzzily processed and the fuzzy risk can be evaluated by using the modified first order second moment method.
   通过对模型中的参数进行模糊化处理，用改进一次二阶矩法计算了地下水过量开采的模糊风险率。
2. The fittings box structure is on the second rectangular and can be optionally opened or closed to hold a second article in the second rectangular.
   配件盒结构位于第二次矩形体上，配件盒结构可以选择性地打开或关闭，以容置一第二物品于第二次矩形体内。