Upper Left is the Laser Emitter. Below is the Practice of the Laser - Controlled Land Leveling.

右上图为激光发射装置,左下图为激光控制平地技术应用实践.

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A laser land leveling technology is application in the harvester in the paper.

文章是关于激光测平技术在收盐机应用的方案设计.

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Extensive land leveling is often required because the topography must be smoother than for furrow irrigation.

由于畦灌的地形必须比沟灌的平坦,因此,常常需要大面积平整土地.

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