Draughting instruments with or without graduation . part 1 : draughting scale rulers 带或不带分度的绘图仪器.第1部分:绘图比例尺
Draughting instruments with or without graduation ; part 1 : draughting scale rules ; identical with iso 9960 - 1 : 1992 带刻度或不带刻度的绘图仪器.第1部分:绘图比例尺
The major considerations in proposing this scheme include the purpose of the classification , mapping scale , source of data , technological approach in producing the landuse plan , size of the study area and compatibility with previous work and national landuse standards 提出这一方案时考虑了多种因素,包括分类目的、绘图比例尺、资料来源、绘制土地利用图的技术途径、研究范围规模、以及与以前工作成果和国家标准的相容性。