从事故致因角度，对危险品水路运输事故致因因素类进行识别，分析事故致因因素间的相互关系，探索危险品水路运输事故致因机理，旨在预防危险品水路运输事故的发生。

In this paper, from the perspective of accident causation, we identified the factors resulting in accidents in hazardous material waterway transportation, analyzed their interrelationship and explored the accident-causing mechanism of them.

首先阐述我国长江水路集装箱运输的现状，其次分析目前长江水路集装箱运输发展存在的问题，最后从发展规划、设施建设、运输管理以及规模化经营四个角度提出促进我国长江水路集装箱运输发展的政策建议措施。

In this paper, we first introduced the current status of the waterway transportation system of the Changjiang River, then analyzed the existing issues relating to the waterway container transportation along the river, and at the end proposed the corresponding countermeasures.

利用Moldflow软件对平板电视底座支架成型过程进行模拟仿真，对传统冷却水路、圆形随形冷却水路、方形随形冷却水路方案进行了模拟分析。结果表明，圆形和方形随形冷却水路冷却周期明显短于传统水路，圆形和方形随形冷却水路冷却周期相近；圆形随形冷却水路承受注射压力优于方形随形冷却水路。利用选择性激光熔化技术快速制造出具有随形冷却水路的注射模镶件，将该镶件应用实际生产，成型的塑件质量良好，模具冷却周期缩短了50%。

The forming process of the pedestal bracket of a panel TV was simulated by Mold?flow software; and the traditional cooling water channel scheme and the circular and square conformal cooling down channel scheme were respectively simulated and analyzed. The results show that the cooling-down period of circular and square conformal cooling channels is similar and obviously shorter than that of traditional cooling channels. And the circular channel is better than the square one in bearing the injection pressure. The applica?tion of injection mould inserts with conformal cooling water channel which was rapidly manufactured by selective laser melting technology can shorten the mould cooling-down peri?od by 50%.

通过监测了解口腔综合治疗台水路污染状况,探讨消毒方法及消毒频率,为综合治疗台水路污染控制提供依据。方法:在综合治疗台水路系统消毒前和消毒后第1、2、3、4天随机采集综合治疗台的水源水、手机喷水和三用枪出水的水样进行细菌计数和菌种鉴定,每月1次,重复6次。结果:工作中手机喷水与三用枪出水采样监测,两者比较差异有统计学意义(P0.05﹚,消毒后第1、2、3天两者比较无统计学意义(P0.05﹚,消毒后第4天与第1天两者比较差异有统计学意义(P0.05﹚。结论:口腔综合治疗台水路系统污染较严重,500 mg/L含氯消毒液对综合治疗台水路有较好的消毒效果,可常规应用于口腔综合治疗台水路的消毒处理,以降低医院感染的风险。

Objective:To explore disinfection method and frequency of disinfection,providing a basis for compre-hensive treatment of pollution condition of dental unit waterlines by monitoring. Methods:The bacteria count and strains were identified by randomly collecting sample water through mobile phone spray and three spray gun. after 1,2,3,4 days for the comprehensive treatment of water system before sterilization and disinfection,once a month for 6 times re-peatedly. Results:The water sample monitoring was completed by both mobile phone spray and three spray gun. Com-paratively,There was statistically significant difference(P 0. 05);after the 4th day of disin-fection ,there was statistically significant difference,compared with the 1st day(P<0. 05). Conclusion:500 mg/L chlorine disinfectant for integrated DUWL treatment station is helpful. Serious water system pollution exists in the oral comprehensive treatment. Comprehensive treatment of water disinfection can be used routinely in

基于变模温技术原理，提出采用高光注塑技术生产具有高光泽度卫浴把手塑料件。为实现把手的高光效果，确定了高温水加热、低温水冷却的变模温方式，提出了高光水路设计方法，构建了双面变模温的随形水路。采用Fluent软件对模型热响应进行模拟分析，验证高光水路结构的合理性。

Based on the principle of variotherm,rapid heating cycle molding was advanced to produce high glossy bathroom shower handle.In order to realize high glossy effect, a rapid heating cycle molding way with water heating and cooling was used, based on which, a new design method for rapid heating cycle waterway was presented to set up a waterway close to handle shape. Then, the thermal analysis models for a handle mould were set up and analyzed by Fluent, whose results were reasonable.