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...
硫化物集体大部由磁黄铁矿 、 镍黄铁矿 、 黄铜矿及黄铁矿组成.The sulfide assemlage consists largely of pyrrhotite, pentlandite, chalcopyrite, and pyrite.某些贱金属以及金常常与磁铁矿和磁黄铁矿这类磁性矿物一起被发现.Base metals and gold are often found in association with magnetic...
The engine burst into life.引擎突然发动了。They burst in on me while I was working.我在工作时他们突然打断了我.She suddenly burst into song.她突然唱起歌来。Don't blow the balloon up any further!It'll burst!别给气球多充气了!它会破的!He burst into tears,...