“占线信号”的概念、定义、翻译、参考文献-科学参考

单词	占线信号
释义	占线信号 engaged signal engaged tone tone signal busy signal busy back signal busy tone signal
随便看	premelanosome premelt premelting premelting transition premenarchal premenarche premenopausal amenorrhea premenstrual bleeding premenstrual intoxication premenstrual molimen premenstrual period premenstrual syndrome premenstrual tension premenstruum (premenstrua) pre-metallised dye premetamorphic emplacement premetaphase premineral fault premise premises premitosis phase premitotic nuclei premium premium and bond issuance expense premium association

科学参考收录了1248194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。