运用回归分析方法建立的某类销售量预测模型，对季节变化关联较强的商品的销售量有较高的预测精确度。
Certain sales volume prediction model established on the basis of regression analysis method has higher prediction precision to the types of commodity that closely related to the change of seasons.
本文旨在通过对某类常规战术导弹发射控制系统射击模型的分析，探讨导弹打击目标的精确度。
Through the analysis to firing model of the launching control system for a certain type conventional tactical missile, the firing accuracy to the target is discussed.
并根据仿真模型分析了间隙、死区等非线性因素对系统精确度的影响，提出了改进性能的措施。
According to simulation model the effect of backlash and dead zone nonlinear on system performances was analyzed, and the measures of improving the system performances were put forward.
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