This paper has been derived general purpose formula for selection of factor of safety, from statistical nature of actual load and statistical nature of load cap-ability for farm machine.
本文根据农业机械承受的实际载荷及其承载能力的统计特性，导出了选用安全系数的一般通用公式。
The author analyzes the relationship between side and Angle in a diagram to deduce a new general-purpose formula which can determine the length of arc radius and the size of an ellipse.
文中通过分析图形中的边角关系，推导出确定椭圆大、小圆弧半径长度的通用计算公式。
A general purpose feedforward-feedback control algorithm feasible to the process control has been developed. This is a kind of standard pattern formula with form fixed and parameters to be determined.
介绍一种在过程控制中实际可行的通用前馈-反缋控制算法-形式固定而参数待定的标准算式。
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