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quaternary sector
释义
quaternary sector
网络
四级产业
网络释义
1.
四级产业
第
四级产业
(
Quaternary sector
)2000年后,互联网发展,开始将以提供智慧型服务为特徵的产业领域,与资讯技术、科学研究相 …
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steam peeling
steam period
steam permeability
steam phone
steam piano
steam pile driver
steam pile hammer
steam piling machine
steam pipe
steampipe
steam pipe bend
steam pipe choke
steam (pipe)coil
steam(pipe) coil
steam pipe coil
steam pipe expansion loop
steam pipe insulating valve
steam pipe isolating valve
steam pipe joint
steam pipe joint sleeve
steam pipe line
steam pipeline
steam pipe linesteam supply
steam pipe nut
steam pipe of throttle valve
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更新时间:2026/8/3 23:47:51