我们必须避免出现20世纪80年代那样具有破坏性的繁荣萧条交替循环的局面。We must avoid the damaging boom-bust cycles which characterised the 1980s.妄想有时也具有潜在的破坏性。Delusions are sometimes insidiously destructive.这是20年来破坏性最大的风暴.It is the most devastating storm ...
Machine technician can use this language to show the assembly project expediently.这种语言能够使机床技术人员用直观、便捷的方法来演示虚拟机床的装配方案.Non - grade speed adjustment by frequency converters, working steadily, use and maintenance expediently...