词汇	vacuum tubing
释义	vacuum tubing n.真空软管
随便看	active optical network Active Optical Proximity Fuze Active Optical Target Detector Active Optical Target Housing active optical waveguide active optics active-optics Active Optics Simulation System active optimal control design method active option Active Opto-electronic active opto electronic protective device active orange active orary active organ active organic C active organic carbon Active organic fertilizer active organic group active organic matter active orientation active or passive activeorthogonal active outline Active-out of Service