汽油的油蒸汽挥发达到一定浓度极限，正好与拨打、接听过程中出现的火花极易引起爆炸。
Gasoline vapor volatile developed to a certain concentration limit, just with the call, answer the process of sparking easily cause explosion.
在微细电火花加工中，它是决定微细工件和微细电极的极限加工能力的关键因素之一。
They are key factors to limit the machining ability of micro-workpiece and micro-electrode.
在微细电火花加工中，它是决定微细工件和微细电极的极限加工能力的关键因素之一。
They are key factors to limit the machining ability of micro-workpiece and micro-electrode.
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