1. Objective To study the hardhat demands, utilization and satisfaction of health serive in the CaiFeiDian industrial district. 目的探讨曹妃甸工业区建筑工人对卫生服务的需求、利用和医疗满意度情况。
2. This paper presents the reasons of premature failure when cell is stopped. Medium repair practice is performed on the disrepaired cell which prolongs the cell's serive life. 通过对早期破损槽的炉底分析，阐述了早期破损槽的破损原因，并对破损槽进行了中修实践，延长了槽龄，取得了满意的效果。
