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国际隧道协会第２２届大会将在美国华盛顿举行由美国隧道工程技术委员会和美国地下空间协会发起并举办的国际隧道协会第２２届大会，将于１９９６年４月２１日～２４日在美国华盛顿举行。这次大会将就以下几个问题开展讨论：（ｌ）低成本隧道工程开挖的实用技术；（２）隧...
The 22nd Congress of International Tunneling Association to be held in Washington, DC The 22nd Congress of the International Tunneling Association, which is sponsored and organized by the U.S. Tunneling Engineering and Technology Commission and the American Underground Space Association, will be held in Washington, DC from April 21 to April 24, 1996 . The conference will discuss the following issues: (l) low-cost tunneling excavation of practical technology; (2) tunnel ...