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在党的“十大”精神的鼓舞下,在去年年底召开的全国林业调查工作会议的推动下,随着批林批孔运动的不断探入发展,我国林业调查规划工作必将出现新的高潮。为适应这一形势发展的需要,我队和河南农学院共同设计一种测树棱镜角规,经农林部同意,已委托黄山仪器厂试制投产。这种棱镜角规共有0.5、1、2、4四个断面积因子,可间接测距;在山地工作时
Inspired by the party’s “Top Ten” spirit and driven by the National Forestry Survey Work Conference held at the end of last year, a new upsurge will surely emerge in our country’s forestry investigation and planning work with the continuous exploration and development of the “bidding for birch holes” . In order to meet the needs of the development of this situation, our team and Henan Agricultural College jointly design a measuring prism prism, with the consent of the Ministry of Agriculture and Forestry, commissioned Huangshan Instrument Factory trial production. This prism angle a total of 0.5,1,2,4 four cross-sectional area factor can be measured indirectly; when working in the mountains