单词	草莽之臣
释义	同BURGER
随便看	optical subcarrier multiplexing optical subscriber loop optical subsystem optical superposition principle optical supervisory channel optical surface optical surface grinding optical surface wave optical susceptibility optical switch optical switching optical switch matrix optical synchronization optical synthesizer optical system optical system design optical systems optical table optical tachometer optical tank circuit optical tape optical taper optical tapered waveguide optical tap off optical taps