词汇	tube scaling
释义	tube scaling 管的计量
随便看	Observe the transit of Venus Observe the transit of Venus,eg across the sun Observe the transit of Venus, eg across the sun observe the trend observe time Observe to the fullest extent observe traffic regulations observe under a microscope observe upon observe up on observe warning Observe wildlife from a distance observe with an unaided eye observe with special attention observicer observin' observing observing ability observing administration observing and aiming system observing and controlling system observing and doing observing and recording observing and sighting system observing angle