secondary sowing 中文意思是什麼
secondary sowing
解釋
第二次播種-
By orthogonal test, analyze the influence of such factors as nozzle diameter, vacuum degree and sowing speed on the performance specifications of the drill, identify them as primary and secondary, and work out the horizontal combination of the favorable factors
通過正交試驗，分析出吸嘴孔徑、真空度和播種速度等因素對播種機工作性能指標的影響情況，得出因素影響的主次順序，找出較優因素水平組合。
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