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1·Valve body and bonnet are separated by diaphragms in order to prevent valve parts, such as bonnets and steam from corrasion;

阀体与盖被中间隔膜隔开，使得隔膜上方的阀盖，阀杆等零件不受介质侵蚀；

2·The palaeostructure high part of Carboniferous in Indosinian epoch is favourable to the development of burial corrasion pores.

石炭系印支期的古构造高部位是埋藏溶解孔发育的有利地区。

3·Although karst pore system was packed again after forming, it provides conditions for the development of burial corrasion pores.

岩溶空隙系统虽然在形成后又被充填，但为埋藏溶解孔隙的发育提供了条件。

4·In this paper, we introduce one component polyurea concept and its rubber physical properties after the one component polyurea cured, and the application of anti-corrasion.

本文简要介绍了单组分聚脲的概念，防腐涂膜的物理性能，以及其在防腐工程上的应用。

5·Abstract: in this paper, we introduce one component polyurea concept and its rubber physical properties after the one component polyurea cured, and the application of anti-corrasion.

摘要：本文简要介绍了单组分聚脲的概念，防腐涂膜的物理性能，以及其在防腐工程上的应用。