理学 数字电视 释 high definition television; HDTV 高清电视 一种新的电视业务。采用数字信号传输，拥有极佳的视频、音频效果，其宽高比为16∶9，已有3种显示分辨率格式：720P（1280×720，逐行）、1080i（1920×1080，隔行）和1080P（1920×1080，逐行），帧率达60fps，支持杜比5.1声道多路环绕立体声。HDTV是high definition television的英文缩写，其中文意思是“高清晰度电视”，源于数字电视（digital television，DTV）技术，采用数字信号，拥有最佳的视频、音频效果。
计算机应用 多媒体 释文 high definition television, HDTV 高清电视
- parabolic basin
- parabolic boundary
- parabolic boundary-value problem
- parabolic bundle of circles
- parabolic bundle of rays
- parabolic collineation
- parabolic comet
- parabolic conchoid
- parabolic cone
- parabolic congruence
- parabolic coordinate
- parabolic coordinate system
- parabolic curve
- parabolic cusp
- parabolic cyclide
- parabolic cylinder
- parabolic cylinder antenna
- parabolic-cylinder coordinate
- parabolic cylinder differential equation
- parabolic cylinder function
- parabolic cylindrical surface
- parabolic differential equation
- parabolic differential operator
- parabolic differential system
- parabolic dish antenna