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예방 유지 보수
preventive maintenance
Last Update: 2020-11-07
Usage Frequency: 1
Quality:
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보수
remuneration
Last Update: 2013-06-12
Usage Frequency: 1
Quality:
Reference:
1의 보수
one's complement
Last Update: 2011-10-23
Usage Frequency: 1
Quality:
Reference:
관측소가 현재 유지/ 보수 중입니다.
station reports that it needs maintenance
Last Update: 2011-10-23
Usage Frequency: 1
Quality:
Reference: