“front porch”的概念、定义、翻译、参考文献-科学参考

单词	front porch
释义	front porch [¦frǝnt `pȯrch] ^{COMMUNICATIONS} Portion of a composite picture signal which lies between the leading edge of the horizontal blanking pulse and the leading edge of the corresponding synchronizing pulse.
随便看	tetrad axis tetradecylamine tetradecyl mercaptan tetradentate ligand tetradic tetrad of Fallot tetradymite tetraethanolammonium hydroxide tetraethylammonium chloride tetraethylene glycol tetraethylene glycol dimethacrylate tetraethylenepentamine tetraethyllead tetraethylpyrophosphate tetrafluoroethylene tetrafluorohydrazine tetrafluoromethane tetrafunctional molecule tetragonal lattice tetragonal trisoctahedron tetragonal tristetrahedron tetrahedral angle tetrahedral molecule tetrahedral symmetry tetrahedrite

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