Results show that the research, application and extension of agricultural technology are the key for solving grain problems in the future.
结果表明农业技术研究、应用与推广是解决未来我国粮食问题的关键。
2
A grain logistics center location model based on extension theory is put forward, which applies extension decision method, cluster analysis and gravity method together.
综合运用可拓决策方法、聚类分析、重心法，建立了基于可拓理论的粮食物流中心选址模型。
3
The results reveal that the grain size of welding seam decreases with the increase of welding velocity and the rate of tubes' extension increases under the same technological conditions.