The paper summarizes the current status and developing trend of mechanical structure of railway signal equipment;
全面概述了铁路信号设备机械结构的现状及发展趋势；
The latest developments of these three fields are described, from which the current status and developing trend of vacuum metrology can be found.
本文描述了这三个方面的最新进展，从中可看出真空计量学的现状与发展趋势。
OBJECTIVE: To summarize and analyze progress and current status of cartilage tissue engineering scaffolds and its developing trend.
目的：总结和分析软骨组织工程支架材料的研究进展、现状及其发展趋势。
The current status of the recycling of used refractories and its developing trend were overviewed.
综述了国内外对用后耐火材料再利用的情况及其发展趋势。
This paper introduced the current status, market situation and developing trend of Chinese plastics accessory ingredients industry, and raised proposals for development of new varieties.
文章介绍了我国塑料助剂工业的现状、市场情况和发展趋势，并对我国塑料助剂新品种开发提出了建议。
This paper reviewed the current status of application of instrumental analysis methods in petrochemical industry at home and abroad in recent years, and discussed its developing trend.
综述了近年来国内外仪器分析方法在石化行业中的应用现状和研究进展，并探讨了发展趋势。
This paper reviewed the current status of application of instrumental analysis methods in petrochemical industry at home and abroad in recent years, and discussed its developing trend.
综述了近年来国内外仪器分析方法在石化行业中的应用现状和研究进展，并探讨了发展趋势。
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