“polar keying”的概念、定义、翻译、参考文献-科学参考

单词	polar keying
释义	polar keying [`pō·lǝr `kē·iŋ] ^{COMMUNICATIONS} Telegraph signal in which circuit current flows in one direction for spacing.
随便看	scraper hoist scraper loader scraper ring scraper ripper scraper trap scrapie scrap mica Scraptidae scratch scratchboard scratch-brush finish scratch coat scratch file scratch filter scratch hardness scratch hardness test encrustation encrypt encrypted message part encryption Encyrtidae encystment end Endamoeba end-and-end

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。