“manual telephone switch board”的概念、定义、翻译、参考文献-科学参考

单词	manual telephone switch board
释义	manual telephone switch board 人工电话交换机
随便看	brittle bean brittle coating brittle consistency brittle deformation brittle ductile transition brittle-ductile transition brittle failure brittle fibre brittle fracture brittle fracture stress brittle fracture surface brittle glass brittle hair brittle heart brittle-lacquer technique brittle lattice brittle material brittle materials tensile-strength tester brittlement brittle metal brittle mica brittle mineral brittle model brittleness brittleness index

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。