“操作者”的英语？

面板上的指示器将出现闪光,对操作者发出出现这种情况的警告.The operator is alerted to this situation by blinking front - panel indicators.有些设计者和操作者需要在二段转化炉外壳涂以此种油漆.Many designers and operators require such paint on their secondary reformer shells.这是韦...