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应美国犹他大学及美国著名的Carpco公司的邀请,于1988年3月下旬至5月上旬在美进行访问及讲学,在此期间还访问了美国矿业局(Bureau of Mines),参观了该局的研究中心,参观了著名的ASCO公司及所属研究所,还专门参观了犹他大学附设美国节能委员会的粉碎研究中心(Comminu-tion Center)以及在犹他州的一个国际控制中心(Control International,Inc),在旧金山参观了加州大学伯克利分校,也见到了选矿教授Sastry,参观了他们的选矿展览会,很荣幸地两次见到了世界选矿权威、
At the invitation of the University of Utah and the famous Carpco Company in the United States, he visited and lectured in the United States from late March to early May 1988, during which time he also visited the Bureau of Mines and visited the council The research center visited the prestigious ASCO Company and its affiliated institutes and visited the University of Utah’s Comminu- tion Center attached to the American Council on Energy Conservation and an International Control Center in Utah, Visited the University of California, Berkeley in San Francisco, and also met the dressing professor Sastry visited their dressing exhibition, it is my pleasure to see the world’s mineral processing authority twice,