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社会体育指导员
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social sport instructor
社会体育指导员
中国在竞技体育、学校体育、部队体育以外的群众性体育活动中,从事技能传授、锻炼指导和组织管理工作的人员。
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steel and concrete composite structural member
steel andreinforced concrete gravity platform
steel arches
steel band
steel bar
steel bar bender
steel bar cold-drawing machine
steel bar cold-extruding machine
steel bar molding
steel bar processing machinery and prestressed machinery
steel-bars truss deck
steel bar truss molding machine
steel beam
steel beam for emergency repair of railway
steel-belt sorter
steel bonded cemented carbide
steel braced frame
steel braced frame structure system
steel bridge
steel bridge erection
steel bridge fabrication
steel building structure
steel butt welding machine
steel cable
steel cage forming machine
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