(一) 根据(75)一机重联字21号和(75)油化开字第126号文通知,“一机部、石油化工部石油钻采机械易损件技术攻关经验交流座谈会”于一九七五年八月十六日至八月二十六日在兰州举行。出席会议的有一机、石化、国家计委地质局和国家建委建材局等所属有关使用、设计、制造,科研部门以及高等院校共80个单位189名代表。 (1) According to (75) a reconnection of the word on the 21st and (75) oil to open the word No. 126 notice, “a machine, the Ministry of Petrochemical oil drilling technology vulnerable parts of technology exchange experience symposium” Was held in Lanzhou from August 16 to August 26, 1975. A total of 189 delegates from 80 institutes including the use, design, manufacture, scientific research departments and institutions of higher learning affiliated to PetroChina, Petrifaction, State Bureau of Planning Geology and the State Building Construction Materials Bureau attended the conference.