单词	乳清脂
释义	乳清脂serum butter
随便看	optical time-domain reflectometer {=otdr} optical time-domain reflectometer{= otdr} optical time domain reflectometer，otdr optical time domain reflectometry optical time domain reflectometry {=otdr} optical time standard optic altimeter optic--altimeter optical timing extraction optical-to-electrical converter optical token-ring optical tolerance gage optical tomography optical tooling optical torque optical track optical tracker optical tracking optical tracking satellite optical tracking system optical track pitch optical train optical transceiver optical transceiver module optical transducers