Xiehe Education Group pricipal Mrs. Lu did the opening ceremory speech and explained the meaning of bilingual.

协和教育集团总校长卢慧文女士在开幕式上致开幕辞，向同学们介绍了双语的意义。

This paper comprehensively introduces the concept, classification, task, methods and pricipal applications of data mining.

本文综合介绍了数据挖掘的概念、分类、任务和方法，并展示了其丰富的应用领域。

Put the equity ratio of social capital into pricipal-agent model, that relates pricipal-agency relationship to the equity allocation mechanism;

将社会资本的股权比例因素引入到委托代理模型中，从而将合资铁路中的委托代理关系与股权分配机制联系起来；

This paper deals with two types of direct parallel communication of multi-SCP system, the pricipal and subordinate method and poly-pricipal method.

介绍了两种多单片机系统的直接并行通信方法，即主从方法和多主方法。

Following the nessecity, Pricipal rule, procedure and computing method of determining boundary water quality standards, an example research of Huaihe River-Shaying River is presented.

以沙颖河-淮河干流水系为例进行的实例研究得出了该水系的省界水质标准。