Objective To describe the distributional characteristics and development of dentists doing orth-odontic work in Liaoning.

目描述辽宁省11个城市口腔正畸人才发展状况分布特点。

Abstract: Serai process of vegetation on the sand of Zhanggutai in Liaoning province is from moving dune.

辽宁省章古台沙地植被演替过程，从流动沙丘开始。

Basing on the field perambulation and information collection, 107 typical mines in Liaoning Province were evaluated with Analytic Hierarchy Process.

勘察资料基础上，运用层次分析方法对辽宁省107个典型矿山地质环境状进行综合评估。