机车速度指示器的英文

• engine speed indicator

• 机车:    locomotive; engine; haulage ...
• 速度:    velocity; speed; blast; bat
• 指示器:    indicator; pointer; director ...
• 速度指示器:    indicators (speed ); motion indicator; rate indicator; speed indicators; velocity indicator
• 角速度指示器:    angular velocity indicator; angular-rate indicator