Examined by practice, the method about the working condition parameter optimization for coal plough and the calculation about friction force on plow head are feasible.
经实践检验，本文的刨煤机工况参数优化方法和刨头摩擦力计算方法是切实可行的。
Designing the working condition parameter optimization and calculation system for the plow head 'force, the system has been applied to design and practice production and achieved good results.
设计了刨煤机工况参数优化和刨头受力的计算程序，该计算程序已被应用于实际生产，取得了良好的效果。
Basing on the natural condition of the soil of Heilongjiang, the no-tillage mulch planter is designed, including the option, design and confirming of parameter of the main working bodies.
本文针对黑龙江土壤自然状况，设计了主要用于小麦播种的免耕播种机，包括主要主要工作部件的选择、设计及参数确定。
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