“break period”的概念、定义、翻译、参考文献-科学参考

单词	break period
释义	break period [`brāk ´pir·ē·ǝd] ^{COMMUNICATIONS} Of a dial telephone, the time interval during which the circuit contacts are open.
随便看	barrier bar barrier basin barrier beach barrier capacitance barrier chain barrier curb barrier flat barrier-grid storage tube barrier ice barrier injection transit-time diode barrier island barrier lagoon barrier lake barrier layer barrier-layer cell barrier-layer photocell barrier-layer rectification barrier marsh barrier material barrier penetration barrier plastic barrier reef barrier separation barrier shield barrier spit

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。