“toll center”的概念、定义、翻译、参考文献-科学参考

单词	toll center
释义	toll center [`tōl ´sen·tǝr] ^{COMMUNICATIONS} A telephone central office where trunks from end offices are joined to the long-distance system, and operators are present; it is a class-4 office.
随便看	Rusa oil Rushton-Oldshue column Russell bodies Russell diagram Russell effect structural gene structural geology structural glass structural high structural information structural isomers structural low structural petrology structural riveting structural shape structural stability structural steel structural terrace structural tile structural trap structural valley structural wall structural weight structure structure amplitude

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