Hubert H H
Stomatol DDR. 1980 Jan;30(1):52-3.
Maintaining the optimum speed of rotating dental instruments is of great significance in dental care. Because a control unit with the necessary measuring range (750--300.00 rpm) was not available, such a device was designed and constructed on the basis of an innovation contract.
在牙科护理中，保持牙科旋转器械的最佳速度具有重要意义。由于当时没有具备必要测量范围（750 - 300,000转/分钟）的控制单元，因此根据一份创新合同设计并制造了这样一种设备。
