护种 meaning in Chinese

heel cup
heel pad
heel protection cup

The main context of this paper is improving the precision of the disseminator . through analyzing the motion and construction parameter , making sure of the factor of working property , the motion equations of seed were established , and then the mathematical patter of main parameters were established . using of vb , we compiled procedure to simulate the motion of seed in the working process , finding the main factor that affect on the working property of the disseminator , then optimal designing of parameters of the device was laid
通过对排种轮的充种极限速度、清种始角、护种始角、排种器的投种口尺寸、型孔的尺寸等运动参数和结构参数进行分析，总体了解排种器结构参数和运动参数对其工作性能的影响，建立种子的运动方程，进而建立各主要参数(充种速度、清种角、护种角等)的数学模型，运用计算机辅助分析( caa )方法，通过visualbasic编制程序，对排种器工作过程中种子的运动进行动态模拟，找出影响排种器工作性能的主要因素，并对其参数进行优化，为合理地优化设计奠定了基础。