The book "Calculation of complex vacuum systems" by the authors Sergey Borisovich Nesterov, Yuri Konstantinovich Vasilyev and Alexander Vasilievich Androsov is a unique textbook that will become an indispensable assistant for students and specialists in the field of vacuum engineering . This edition covers key aspects of vacuum system design and calculation, making it relevant to both technical university students and practicing engineers. In this book, the authors share their knowledge and experience in the field of vacuum technology, inviting the reader to immerse themselves in the world of complex vacuum systems. The book begins with the basics, gradually deepening into more complex topics, which allows the reader not only to master the theoretical aspects, but also to apply them in practice. It examines the different types of vacuum systems, their components, operating principles and calculation methods, making it an ideal training manual for the courses "Crivavacuum technology" and "Calculation of complex vacuum systems". Special attention is paid to practical tasks that students may encounter in the learning and working process. The authors offer many examples and tasks that will help to consolidate theoretical knowledge and develop skills in solving real engineering problems. This makes the manual not only a theoretical, but also a practical guide, which is especially important for future engineers. The book will be of interest to students of technical specialties, graduate students, as well as specialists working in the field of vacuum engineering and related disciplines .. It is suitable for those who want to deepen their knowledge in this area, as well as for those who are just starting their way in the world of vacuum technologies. Given the complexity and variety of topics, the manual will also be useful to teachers who are looking for quality materials for their courses. The topics raised in the book cover a wide range of issues, such as the physical foundations of vacuum, measurement and control methods, and the design and operation of vacuum systems. The authors emphasize the importance of accuracy of calculations and the correct choice of components to ensure the reliability and efficiency of vacuum systems. This makes the book particularly valuable in light of modern quality and safety requirements in engineering practice. The style of the authors is distinguished by clarity and accessibility of presentation, which allows the reader to easily assimilate even the most complex concepts. Nesterov, Vasilyev and Androsov are experienced specialists in their field, and their knowledge and experience are reflected in each section of the book. They are also the authors of other well-known works on vacuum engineering and related fields, which confirms their authority and professionalism. If you are looking for a high-quality tutorial on vacuum systems that combines theory and practice, "Calculation of complex vacuum systems" will be an excellent choice. This book will not only expand your knowledge, but also help you become a more confident specialist in the field of vacuum engineering. Do not miss the opportunity to get acquainted with this fascinating and important area of science and technology, which opens up new horizons in various industries, from microelectronics to medicine.