例句與造句

1. The abstract of the paper " On the central limit theorem of calculus of probability and the problem of moments " by P髄ya in 1920 translates as follows.
2. Mathematically, this is known as the ( generalised ) problem of moments : for a given class of random variables X, find a collection \ { f _ i \ } of functions such that the expectation values \ operatorname { E } [ f _ i ( X ) ] fully characterise the distribution of the random variable X.
3. It's difficult to find problem of moments in a sentence. 用problem of moments造句挺難的