Then we distinguish low-frequency word pairs of unknown words in the remaining debris using a variety of statistical and rule a combination of approaches the mutual information into word probability non-words the entropy of adjacent words morpheme combination .

之后我们在所剩 碎片中判别低频双 字未登录词，采用了多种统计与规则相结合的办法，有互信息、成词非词概率、邻字熵、素性组合。

With the rapid development of science and technology countrs from all over the word pay more and more attention to the problem of space debris shielding .

随着空间科学技术的快速发展， 世界各国越来越重视航天器空间 碎片的防护问题。