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根据中德技術合作达成的协議,民主德國派遣江河水文仪器?彝叨亍べ〔枷?Walter Dorndusch)先生來中國指導水文仪器的制造工作〔枷O壬延?月20日飛抵北京,經共同研究,确定?业墓ぷ髦氐闶?解决目前中國旋槳式流速仪的進水進沙問題和帮助研究
According to the agreement reached between China and Germany on technical cooperation, Democrats dispatched river hydrological instruments to China to guide the manufacture of hydrological instruments. They flew to China on the 20th of 20th for the manufacture of hydrological instruments. Beijing, through joint research to determine the tomb ぷ 氐 闶 闶? Solve the current China propeller-type meter into the sand into the water problems and to help research