单词	actual hour
释义	actual hour 实际劳动时间
随便看	frequency curve frequency-curve frequency curve chart frequency curve fitting frequency curve of flood level frequency curves frequency cutoff frequency, cutoff frequency data frequency-dc voltage converter frequency dead band frequency decay frequency deceleration frequency decomposing technology frequency decorrelation frequency deemphasis device frequency deflection frequency delay repeating frequency demodulation frequency demodulation analysis frequency demodulator frequency demultiplication frequency demultiplier frequency density frequency density function