他示范如何修补车胎刺孔.He demonstrated how to mend a puncture.设计了一种金属孔板波纹填料用刺孔机,包括上、下辊轮, 刺辊, 槽辊, 减速系统.It includes the up and down rolling wheel , thorny roller, groovy roller, reducing gears....
Effect of basicity of electrode coating on desulphidation and dephosphorization is studied.通过试验研究了焊条药皮碱度对熔敷金属脱硫脱磷行为的影响.The experiments of dephosphorization of hot metal by using converter slagflux were performed in the s...
We are willing to authorize the president to use force if necessary.我们愿意授权总统在必要的时候使用武力。He said that he needed to get his supervisor to authorize my refund.他说必须让主管人员批准我的退款.It would certainly be within his power to authori...