词汇	at vast expense
释义	at vast expense短语¹¹⁴⁴⁶⁷⁺⁴大笔的开支
随便看	optical fiber grating optical fiber grating filter optical fiber gratings optical fiber grating sensor optical fiber grating smart structure optical fiber grating stress sensor optical fiber guide optical fiber gyro optical-fiber gyro optical fiber gyros optical fiber gyroscope optical fiber hazard optical fiber head optical fiber helical microbend sensor optical fiber hydrogen sensor optical fiber hydrophone optical fiber identifier optical fiber/IGBT opti-cal fiber illuminator optical fiber image bundle Optical fiber image bundles optical fiber imperfection optical fiber industry optical fiber information transmission optical fiber interconnecting