trend cycle

By analysis of the equipment condition of cycle tire industry for 28 enterprises, describes the condition of production equipment for cycle tire industry and points out the development trend of cycle tire production equipment in the future.

通过对力车胎行业28家企业装备状况的调查分析，说明了力车胎行业生产装备的现状，并指出了今后力车胎生产装备的发展方向。

With the three-dimensional graphics technology and computer technology, three-dimensional design technology, with part design more convenient and more intuitive assembly parts, machinery shorter design cycle, design errors, such as easy to discover the advantages to become the development trend of the mechanical design.

随着三维图形技术和计算机技术的发展，三维设计技术具有零件设计更加方便、装配零件更加直观、机械设计周期更短、设计中的错误易于发现等优势成为机械设计的发展趋势。

Making use of time series model and other econometric approach, this article partitions the trend of China's GDP data, and repartitions China's economic cycle on the grounds of the empirical results.

文章利用时间序列模型等计量方法，对中国GDP总量序列进行了时间趋势分解并结合实证结果对中国经济的发展周期进行了重新的划分。

In the course of the study, firstly, it uses HP filter trend decomposition method to investigate the relationship between economic growth cycle and fluctuations of the Shanghai Composite Index.

在研究过程中，首先，基于2002年1月至2011年12月的月度数据采用HP滤波趋势分解法探讨经济增长周期与上证指数波动的关系。

Research progress and trend of the carbon cycle in grassland agroecosystem

草地农业生态系统中的碳循环研究动态