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1·In the model, the leaf area index (LAI), crop coefficients, and root penetration and distribution were simulated for the winter wheat and summer corn double cropping system.

模型对冬小麦—夏玉米轮作体系作物叶面积指数、作物系数、根系生长与分布进行了模拟。

2·It analyzes the base metal's penetration. It discusses the relations of base metal's penetration to reinforcement, base metal's penetration to groove penetration, root penetration and pro...

对母材熔深作了剖析，结合实验数据详述了母材熔深与余高的关系以及母材熔深与坡口熔深、钝边熔深的关系，并且提出了关系式。