“back porch”的概念、定义、翻译、参考文献-科学参考

单词	back porch
释义	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.
随便看	shrimp shrinkage shrinkage cavity shrinkage crack shrinkage index shrinkage limit shrinkage pore shrinkage ratio shrinkage rule shrinkage stoping shrink fit shrink forming shrink-mixed concrete shrink ring shrink rule shrink wrapping shroud shrouded propeller shrub shrub-coppice dune Shubnikov-de Haas effect Shubnikov groups shuga shungite shunt

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。