词汇	total testing timed
释义	total testing timed 总试验时间
随便看	single current dipole single current-double current converter single-current, double-current repeater single current generator single current key single-current key single current method single current morse key single current sensing single current signalling single-current signalling single current system single-current system single current telegraphy single-current telegraphy single current transmission single-current transmission singlecurrent transmission system single-current transmission system single current working single curvature single-curvature arch dam single curvature parts single-curvature surface single curve