In addition, auto-searching in focusing field is also developed, and successive approximation approach was adopted as a method of auto-searching in this focusing system.
此外文章还讨论了在可调焦范围内进行焦点自动搜索的方法，选用了逐次逼近法来进行本系统自动调焦的控制。
2
By field located experiment in semi-aired areas of loess plateau for successive 4 years with spring wheat, effects of N fertilizer and residual effect of N fertilizer on spring wheat was studied .