单词	back porch
释义	back porch Thesaurus Noun 1. back porch - a porch for the back door porch - a structure attached to the exterior of a building often forming a covered entrance back porch back porch [′bak ¦pȯrch] (electronics) The period of time in a television circuit immediately following a synchronizing pulse during which the signal is held at the instantaneous amplitude corresponding to a black area in the received picture. back porch noun Words related to back porch noun a porch for the back door Related Words porch
随便看	density point density-polarization functional theory density porosity density, pressure density quantile function density ratio density reduction groundwater resource density rule density rules density sampling density scale density specific impulse density state density step tablet density time after bit density time curve density times thickness density transmitter density wave density-wave theory density wedge density-weighted contrast enhancement density weighting function dens lacteus dens lupinus

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