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闭合系统
agric. close system
el. closed-circuit system; looped system
hydroel.st. closed system
oil loop system
闭合［封闭］系统
space closed system
闭合系统
: 32 phrases in 13 subjects
Aviation4
Earth sciences2
Economy1
Electronics1
Engineering geology1
Genetics1
Information technology1
Navigation1
Plastics1
Rail transport2
Space7
Technology9
Water resources1

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