词汇	double control
释义	double control 双重控制
随便看	relative-velocity relative velocity cut-off relative velocity factor relative vergence relative vertebral density relative-veto relative vibration Relative vigor index relative virtual address relative viscometer relative viscosity relative-viscosity relative viscosity increment relative viscosity of slip relative viscosity ratio relative viscosity-temperature number relative visibility relative visibility curve relative visibility factor relative-visiting diplomacy relative visual acuity relative visual field relative volatility relative voltage change relative voltage drop