| Acknowledgements | 第4-5页 |
| Abstract | 第5页 |
| 摘要 | 第7-11页 |
| List of Abbreviations | 第11-12页 |
| Chapter One Introduction | 第12-17页 |
| 1.1 Research Background and Significance of the Research | 第12-13页 |
| 1.2 Research Objectives | 第13-14页 |
| 1.3 Research Questions and Research Mothod | 第14-15页 |
| 1.4 Structure of the Thesis | 第15-17页 |
| Chapter Two Literature Review | 第17-24页 |
| 2.1 Online Machine Translation Systems | 第17-20页 |
| 2.1.1 Brief Introduction of Three Online Machine Translation Systems | 第17-19页 |
| 2.1.2 Review of Researches on Online Translation Systems | 第19-20页 |
| 2.2 Translation Quality Assessment of machine translation | 第20-24页 |
| 2.2.1 Brief Introduction of Translation Quality Assessment of machine translation | 第20-21页 |
| 2.2.2 Review of Researches on Translation Quality Assessment of machine translation | 第21-24页 |
| Chapter Three John Lehrberger and Laurent Bourbeau's Model of Machine TranslationQuality Assessment | 第24-37页 |
| 3.1 Identification of user's needs and constraints | 第24-25页 |
| 3.1.1 Characteristics of texts to be translated | 第24-25页 |
| 3.1.2 Projected level of automation | 第25页 |
| 3.1.3 Constraints on quality of translation | 第25页 |
| 3.2 Evaluation of Performance of Linguistic Components | 第25-27页 |
| 3.2.1 Building Test Sentences | 第26页 |
| 3.2.2 Selection of Sample Texts | 第26-27页 |
| 3.2.3 Classification and Interpretation of Results | 第27页 |
| 3.3 Evaluation of system's Potential | 第27-29页 |
| 3.3.1 Limitations of the System | 第27-28页 |
| 3.3.2 Improvability of the System | 第28-29页 |
| 3.4 Evaluation of User Environment | 第29-32页 |
| 3.4.1 Maintenance and Development of the System | 第29-31页 |
| 3.4.2 "Garbage Collector" Facilities | 第31页 |
| 3.4.3 Text Editor Used for Human Revision | 第31页 |
| 3.4.4 Documentation of the System | 第31-32页 |
| 3.5 Global Assessment of System's Acceptability to the User | 第32-33页 |
| 3.6 Evaluations in the Thesis | 第33-37页 |
| 3.6.1 A Preliminary Assessment | 第33-35页 |
| 3.6.2 The Concrete Assessment | 第35-37页 |
| Chapter Four Quality Assessment of Online Machine Translation Systems | 第37-51页 |
| 4.1 The Methodology of Evaluation | 第37-39页 |
| 4.1.1 Preparation of Testing Materials | 第37页 |
| 4.1.2 Online Machine Translation Evaluation Measurements | 第37-39页 |
| 4.2 A Preliminary Study of Online Machine Translation Systems | 第39-45页 |
| 4.2.1 A comparative study of the output quality | 第39-41页 |
| 4.2.2 A comparative study of the valid sentences | 第41-45页 |
| 4.3 A comparative study of the Gross Error Rate | 第45-47页 |
| 4.4 The Application of the Online Machine Translation System in Localization | 第47-51页 |
| Chapter Five Conclusion | 第51-53页 |
| 5.1 Conclusion of the Thesis | 第51页 |
| 5.2 Limitations of the Research | 第51-52页 |
| 5.3 Suggestions for Future Research | 第52-53页 |
| Works Cited | 第53-56页 |
| Appendix | 第56-75页 |
