diffusion area造句

• According the mature area of hydrocarbon sourcerock , this paper determined the gas diffusion area
  根据烃源岩成熟面积确定天然气扩散面积。
• This article points out that in china , the drought is aggravating gradually , agriculture proportion is decreasing slowly , arable area per capita , irrigation area and weight of diffusion area of new quality maize seed shows slow growth . it is difficult to improve maize technical efficiency
  对技术效率的影响因素的研究结果表明，全国的旱灾趋于加重，农业比重正在缓慢下降，人均耕地面积、灌溉和新品种应用的增长不快，而且从分布上来看多对玉米主产区不利，未来玉米技术效率提高的形势严峻。