angle of release meaning in Chinese

出手角度
开角
释放角

The optimum angle of release is about forty four degrees
最佳的投出角度大约44度
Based on the analysis of the kinetic track of the scallion during planting , basic relationships ' among the characteristic parameters of the transplanter with two flexible metal disks , including the velocity of the transplanter , the rate of transplanting , the spacing between seedlings , the angle of releasing seedlings , the diameter and length of seedlings , have been set up in this paper , and then a mathematic model of optimum design for the transplanter with the final planting angle of seedlings ( y = 90 ) has been formulated and solved with good results . according to the optimum solutions , a new type of transplanter with two flexible metal disks has been developed and the field tests of the transplanter have been conducted
为了实现大葱机械化移栽，作者分析了国内各种移栽机的结构特点，确定了以挠性圆盘式栽植器为研究对象，在分析挠性圆盘式栽植器的运动轨迹和特征参数的基础上，完整地确立了挠性圆盘式移栽机的基本参数：栽植频率、栽植株距、机组前进速度、输送带上秧槽的间距、挠性圆盘半径、挠性圆盘的转速、夹苗株数以及传动比之间的相互关系，并建立了以葱苗栽植倾角= 90为目标的优化设计数学模型，提出了挠性圆盘式大葱移栽机的优化设计方法。