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［根据中、加两国签订的协议］，为了增进中加两国人民的友好往来及促进两国之间的学术交流，１９７７年３月８日由加拿大国家研究院物理部主任雷德黑特博士率领的加拿大计量考察团，来我国进行考察历时七天。在北京期间，雷德黑特博士参观了中国计量科学研究院的标准真空实验室，并与我国部分真空工作者举行了两次技术交流座谈会。座谈的内容涉及到真空测量、真空计量技术及其他有关问题。现将雷德黑特博士在技术交流座谈会上的发言进行整理和归纳，介绍给有关单位，予以了解和参考。
[On the basis of the agreement signed between China and Canada, in order to promote the friendly exchanges between the peoples of China and Canada and to promote academic exchanges between the two countries, March 8, 1977, Dr. Redhead, Director of the Physics Department of the National Institute of Canada Led by the Canadian measurement mission, came to our study for seven days. During his stay in Beijing, Dr. Redhead visited the standard vacuum laboratory of China National Institute of Metrology and conducted two seminars on technology exchange with some vacuum workers in our country. The discussion covered vacuum measurement, vacuum measurement and other related issues. Presently, Dr. Redhutter collated and summarized the speeches at the forum on technology exchange and introduced them to relevant units for understanding and reference.