digging efficiency

基本解释

In order to improve digging efficiency of repairing oil pipeline on line, an optimization method for digging length is studied by combining FEM and genetic algorithm.
以提高输油管道在线修复开挖效率为目的，进行了有限元法与遗传算法相结合的开挖长度优化方法研究。
The utility model has the advantages that the roller vegetable skewer saves labor and time, has high vegetable hole digging efficiency and simple structure and is economic and practical.
本实用新型的有益效果是，节省人力和时间，挖菜穴的效率高，结构简单，经济实用。
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The article introduces how to improve the digging efficiency of the working face of stone head in minefield, and discusses the measures to improve the construction schedule of stone head by examples.
介绍了如何提高矿区岩巷工作面的掘进工效，运用实例说明了提高巷道施工进度的对策。