- letter reference number
- 书信: letter; written message
- 务: affair; business
- 备查: for future reference
- 号数: number
- 书信备查号数: letter reference number
- 备查号码: letter reference number
- 书信备查: letter reference
- 书信备查簿: l. b. letter book; letter book
- 查号: directory enquiry
- 书信: letter; written message 书信格式 form of a letter; 商业书信 business correspondence; 和 ...书信不断 be in constant correspondence with ...; 包裹内不得夹带书信。 the package carries no written message
- 查号台查号: number information
- 查号台: directory inquiries; information desk; directory assistance
- 备查表: reference table
- 备查簿: memorandum book
- 任务备忘录: task memorandum
- 业务备忘录: endowment memorandum; engagement memorandum
- 查号辅助: directory assistance
- 查号呼叫: directory enquiry call
- 查号话务员: number service operator
- 查号业务: directory enquiry service; number service
- 电话查号: directory information
- 电子查号: electronic directory assistance
- 备查簿；备忘录: memorandum book
- 备查分类帐: memorandum ledger
- 备查分录: memorandum entries
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