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With the development of international trade, intellectual property imposes a more and more impact on international competitiveness. Particularly, the effect of patent barrier on China's foreign trade is larger and larger, and becomes an important issue that must be paid attention. The core of this paper is to analyses the effect and reasons of patent barrier on China's foreign trade, and focuses on seeking the measures to break the restriction of patent barrier on China's for日夏养花网eign trade.

阐述近年来视情维修在国内应用和发展情况；在分析了军用工程机械使用特点、康明斯MTA11-C225型柴油机结构与维护特点的基础上，探讨了对该型柴油机实行视情维修的可行性；提出对该型柴油机进行视情维修，需要开展柴油机的故障规律、确定视情维修监测指标和指标参数判定标准、指标参数测点设置、嵌入式监测系统设计等方面的研究。

The earth sinking, happening in the Liujiaping Taolin county, located in about 20 kilometers to the south of Linxiang city Hunan province, which governed by Jinpen village. The earth sinking in March 2012 influenced the liviing environment of the local. This paper studies the physical 日夏养花网geography and the geology environment of this area, the reason and the failure characteristics of this sinking by using methods as field measurements, geologic investigation. After identifing the triggers and the impact of different factors, the paper appropriately evaluates the stability of the mined-out areas and puts forward some suggestions in the sinking precaution and treatment. This study result shows that mined-out area is the principle factor of the surface deformation craze, the atmospheric precipitation is the direct cause.