词汇	pertoleum engineer
释义	pertoleum engineer n.石油工程师
随便看	series spectrum series speed adjustment series spot welding series-spot welding series stabilization series stage series starting rheostat Series Startup Archive series statement series storage battery series straight-side single-point press series street-lighting system series street-lighting transformer series structure series style series submerged arc welding series substitute series / supercapacitor series superscription series switching regulator series system series system electrolysis of solutions series system of distribution series system of refining series systems