Experimental research of de - rowing qualification about 2qxp - 1 , type two - row suction seed metering device 1型双条气吸式排种器分条性试验
A study of seed - throwing mechanism on wheat precision seedermeter with ball - spoon shaped inner - cell 球勺内窝孔小麦精量排种器投种机理的研究
Kinematics and dynamics of a wheat seed in the seed - meter device with combined suckers 新型组合吸孔式小麦精密排种器运动学与动力学特性的研究
Theoretical analysis of seeds filling process in precision metering device with concave metering inner - cell 组合内窝孔精密排种器充种过程分析
Experimental research on soybean seeds filling process of air - blown vertical - rotor seed - metering device 气力轮式精密排种器大豆充种过程试验研究
Study on spring needle device for preventing blockage of the suction hole used in vertical plate precision metering 垂直圆盘精量排种器弹性防堵塞装置的研究
The processes include filling , clearing , retaining and dropping . which establish the basement for the computer stimulation optimized design 二、建立了该排种器工作过程的数学模型，为今后的计算机模拟优化设计奠定了基础。
The study lay the foundation for farther optimized design , meanwhile it can be as an important reference for designing new precision metering device 本研究为进一步的优化设计打下基础，同时为设计新的精密排种器提供了重要的参考。
So , we study its key technology so as to solve this conflict . the main tasks are as follows : 1 . developing a new mechanical precision metering device for beans 本研究的主要工作为：一、研制了一种精播大豆的新型机械式精密排种器。
Seed metering mechanism is a heart of the planter ' s of which the characteristics has direct influence on operational quality whether it performs well or not 排种器是播种机的核心部件，排种器的排种性能好坏直接影响播种机的工作性能。
