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“钱学森建立沙产业理论”十周年纪念暨学术研讨会召开１９９４年９月２７～２８日，在北京召开了“钱学森建立沙产业理论”十周年纪念暨学术研讨会，约８０余名专家学者及有关人士出席了会议。钱学森教授在向与会专家致意的信中指出：我在十年前提出沙产业的设想，只是考...
The 10th Anniversary and Symposium of “Qian Xuesen’s Theory of Building Sand Industry” Held From September 27 to 28, 1994, the 10th anniversary commemorative cum symposium on “Qian Xuesen’s Theory of Establishing Sand Industry” was held in Beijing and about 80 experts and scholars The person concerned attended the meeting. Professor Qian Xuesen pointed out in his letter of greetings to the participating experts: I put forward the idea of the sand industry ten years ago and only test ...