But this isn't a long paper, so are you going to need to pick a specific area of pre-modern agriculture, like irrigation or food crops of ancient Greece.
但这不是一篇很长的论文，所以你要选定一个现代以前农业的特定领域，像是灌溉技术，或古希腊的粮食作物。
With Yanzhong coal mine area as an example, this paper studies the situations of land-using types and agriculture irrigation system in the coal mine area with the RS and GIS technology.
以兖州煤矿区的一部分为例，利用遥感和地理信息系统技术，研究了其中的土地利用和农业灌溉系统的变化。
It is also used in the medical area in such products as IV and blood bags and in agriculture for silo bags, sheds and irrigation pipes.
PV C塑料材料也应用在医学领域中，例如输液管和血袋等，在农业领域则被用在筒仓、大棚和灌溉管道等方面。
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