在党的“十一大”和五届人大强劲东风鼓午下,全国亿万军民正在努力实现新时期的总任务,各条战线出现了一派朝气蓬勃景象的大好形势下,为适应国民经济的发展需要,一机部委托沈阳真空技术研究所,于一九七八年四月十五至廿四日在柳州市组织召开了金属密封超高真空法兰和高真空油扩 Under the powerful “11th National Congress” of the party and the strong vigorous drive of the Fifth National People’s Congress, hundreds of millions of military and civilian personnel across the country are making every effort to realize the general task of the new period. Under the favorable situation of a vibrant youth in all fronts, in order to adapt to the national economy Development needs, a machine commissioned by Shenyang Institute of Vacuum Technology, April 15, to 24 in 1978 in Liuzhou held a metal seal ultra-high vacuum flange and high vacuum oil expansion