principal trace是什么意思

网络释义

用法例句

A study of the minor roles of the comic performances in the Song Dynasty:XIAO,ZHENG and RUO;

杂剧亚脚色“哮”、“郑”、“偌”考

Spatial Variation of Heavy Metals in Soils of Zhengzhou Surburb and Their Origin;

郑州市郊土壤重金属的分布变异及来源

The Analysis of the Current Air Pollution in Zhengzhou Area in 2004;

2004年郑州市不同区域大气污染现状分析

The Ecological Environment Quality Warning of Zhengzhou Using Gray System Based on the PSR Model;

基于PSR模型的郑州市生态环境质量灰色预警

Zhenghe s sailings to the West and the Lingnan area;

郑和下西洋与岭南关系述论

Discussion of Ship Structure and Manufacture Technology of Zheng He s Voyage;

郑和下西洋船舶结构与制造工艺探讨

Research on Zheng He s Voyage and Taicang s Sunken Ship in Yuan and Ming Dynasties;

郑和下西洋与太仓元明沉船之研究

Preliminary Investigation to Relation between Shanghai and Zheng He s Voyage;

郑和航海与上海关系初探

Study on the Protection Strategy for the Zhengzhai Historical Cultural Protection Zone;

郑宅历史文化保护区保护策略研究

In order to popularize the "zheng coden"-a kind of chinese input code,whch is the optimazition to windows operation system chinese version.

为推广中文Windows视窗软件优选的汉字输入编码—《郑码》，在CAI理论的指导下，开发了《郑码学习软件》。

Goal Orientation of Zhengzhou City in Strategy when Central Plains Rising to Prominence;

郑州在中部崛起中的战略目标定位

Development of industry and agriculture of Zhengzhou city has increased groundwater extraction for industry,irrigation and domestic.

建立准三维数值模拟模型和优化管理模型对郑州市地下水资源进行评价、管理。