Objective Discuss sterilization effect of B - class pulsation table top vacuum pressure steam sterilizer for dental handpiece.目的探讨B级脉动真空压力蒸汽台式灭菌器对牙科手机的灭菌效果.Automatic feed back circuit to keep constant revolutions of hand...

handpiece的音标：handpiece的英式发音音标为：[hænd'pi:s]handpiece的美式发音音标为：[hænd'pis]...

手持件，机头...