Common Mistakes at IELTS Advanced and How to Avoid Them (1版)

類似書籍推薦給您

書名：Common Mistakes at IELTS Advanced and How to Avoid Them 作者：Julie Moore 出版社：Cambridge 出版日期：2007/00/00 ISBN：9780521692472 【雅思考生常犯錯誤參考書】 此書是以考試技巧如:速讀、聽力分析、寫作組織、口語訓練等為單元主軸的考試準備書。 ◎ 提供中級(Intermediate: 雅思5.0~6.0)及高級(Advanced:6.0~7.0)兩種版本。 ◎ 資料蒐集自劍橋國際語料庫，根據全世界參與劍橋英檢考試的考生最常犯的錯誤整理編寫而成。 ◎ 包含三十回常犯英語錯誤破解及十回演練，幫助使用者釐清觀念，迅速提升實力。This invaluable little book highlights the real mistakes that students make in the exam - and shows how to avoid them. Based on analysis of thousands of exam scripts, each unit targets a key problem area. Clear explanations and exercises help students to use the language accurately. Regular tests offer students a further opportunity to check and consolidate what they have learnt. Highlights common mistakes that learners really make. Based on analysis of thousands of exam scripts. Short, snappy explanations focus on key problem areas. Includes exam-style exercises.

Advanced Ferroelectric and Piezoelectric Materials

類似書籍推薦給您

【簡介】 Discover the latest advances in ferroelectric and piezoelectric material sciences with this comprehensive monograph, divided into six chapters, each offering unique insights into the field. Chapter 1 delves into the manufacture and study of new ceramic materials, focusing on complex oxides of various metals (Aurivillius phases). The authors explore layered bismuth titanates and niobates, known for their high Curie temperature, and discuss how varying their chemical composition can lead to significant changes in their electrophysical properties. Chapter 2 explores the fascinating world of ferroelectrics — dielectrics with spontaneous polarization. Mathematical models and approaches of fractional calculus are used to understand the process of polarization switching in these materials, shedding light on the fractality of electrical responses. In Chapter 3, readers gain valuable insights into the inhomogeneous polarization process of polycrystalline ferroelectrics, a crucial stage in creating piezoceramic samples for energy converters. The authors present a comprehensive mathematical model that allows the determination of various characteristics, including dielectric and piezoelectric hysteresis loops and the effect of attenuation processes. Chapter 4 focuses on state-of-the-art piezoelectric energy harvesting, discussing theoretical, experimental, and computer modelling approaches. The authors discuss piezoelectric generators (PEGs) of different types (cantilever, stack and axis) and nonlinear effects arising at their operation. Chapter 5 presents expanded test and finite element models for cantilever-type and axial-type PEGs with active elements. The studies cover various structural and electric schemes of the PEGs with proof mass, bimorph and cylindrical piezoelectric elements, and excitation loads. Finally, Chapter 6 reviews some results in the last five years, obtained in modelling the vibration of devices from piezoactive materials, including five important effects: piezoelectric, flexoelectric, pyroelectric, piezomagnetic and flexomagnetic. As a diverse addition to the literature, this book is a relevant resource for researchers, engineers, and students seeking to expand their knowledge of cutting-edge developments in this exciting field. 【目錄】