Rot of the work piece is assured by a SIEMENS brushless Digitally Controlled servomotor with infinitely variable speed.
工件的旋转，由西门子无刷数控伺服马达控制，它可以用不同速度运行。
Control Techniques variable frequency drives provide continuous control, matching motor speed to the specific demands of the work being performed.
控制技术的变频驱动器提供连续控制，配套电机的速度，工作的具体要求正在执行。
It could be accomplished sowing work prescribing by the application maps based on the GPS signal under the control of mechanical variable speed unit.
该播种机由变量控制器控制机械式无级变速器，根据GPS的位置信号，完成处方图设计的播种施肥作业。
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