- on entry into service
- 投入: put into; throw into; input; ...
- 使用: make use of; use; employ; ap ...
- 时: shí]
- 投入使用: bring into operation; bring into service; come into service; come into use; place in service; put into service; put into use; put to use; service entry
- 投入使用计划表: service-entry schedule
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