这是一套实况汉语听力教程,分初、中、高三个级别,每个级别一册。本教材所有录音材料均来自真实的社会生活或广播电台、电视台的访谈节目。其主要特点是:1．对不同性别、不同年龄、不同身份、不同语境、不同语速和不同方言区等条件下的语言材料进行分类,强化训练学生对各种条件下语言材料的听力理解能力；2．训练学生对...

Since the 19th CPC National Congress, important progress has been made in the joint development of the Silk Road Economic Belt and the 21st-Century...

There are 6 chapters in this book.Chapter 1 introduces automation articulated vehicles and path tracking control methods.Chapter 2 introduces main...

This book introduces and illustrates modeling, sensing, and control methods for analyzing, designing, and developing spherical motors. It...

Metal oxide nanomaterials, due to their unique combination of redox chemistry, optical, electrical and semiconductor properties, have played a key...