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...
A proton is an elementary particle of matter.质子是物质的基本粒子。an elementary English course基础英语课程Their course of study includes elementary hygiene and medical theory.他们的课程包括基础卫生学和医疗知识....
他们车里满载大包小盒，回到了家。They returned home with the car bulging with boxes.那个塑料小盒通体透明.The plastic capsule was transparent all the way round.每个丸药装入小盒后用蜡密封好.Each pill is put into a small box sealed with wax....