论文部分内容阅读
1984年在北京举行的‘国际地质机械仪器展览。。。tt。。，。。。－，－．二二”了厂二二y二。了二7二yT二二二二t 一、基本结构和技米参数会’期间，日本利根公司曾向广大观众介绍其脚踏式”一’－””—’”－农用水泵
The ‘International Exhibition on Geomechanical Instruments held in Beijing in 1984. . . Tt. . , . . -,-. The 2nd and 2nd of the factory were 22nd and 2nd. The 2nd and 7th yT 2222nd I. The basic structure and technical parameters were discussed during the meeting. During the period, Japan’s Reagan Company had introduced its pedal-type “a” to the audience. —’" - Agricultural Pump