The Na - Dene language is spoken by the Tlingit people.特灵吉人说的赫胥语.I am saved western the advantage requirement that has development sanded industry dene.我省西部沙地具有发展沙产业的优势条件....
In that phase, aborning of the job that make oxygen produced very big effect.在那个阶段, 制氧工作在生产中发挥了很大的作用.Pressing element allocation is premise with the action of all sorts of element aborning and contribution.按要素分配是以各种要素在生产...