range disc的意思|示意

This paper set up a dynamic model of soil range to be moved and develops a mathematical model of disc coulter force.

对圆盘开沟器扰动土壤的作用域进行了分析，建立了圆盘开沟器的受力模型。

DVD video can let the viewer decide the rating, range or parental guidance, thanks to preprogrammed scene cuts on the disc itself.

由于光盘本身具有预编图幅剪辑，DVD影像能让观众决定其等级、范围或是否需要父母的指导。

AIM: to explore the clinical feasibility and superiority of hand-assisted laparoscopic surgery (HALS) technique through lap disc hand-assisted device and to extend the application range of HALS.

目的：探讨经蓝碟手辅助腹腔镜下外科技术在腹部外科疾病诊断、手术切除上的可行性和优越性，扩大经蓝碟手辅助腹腔镜下外科技术的适用范围。