built up cast iron propeller 建造铸铁螺旋桨
make-up water iron removal 补给水除铁
moving-iron pick-up head [电子] 动铁拾音头
Blow up iron tower 爆破铁塔
iron-bed with up-flow 上流式铁屑床
up grade cast iron 高级铸铁
·2,447,543篇论文数据，部分数据来源于NoteExpress
Iron ore production in the three months hit 32.45 million metric tons, up from 29.4 million tons a year earlier.
VOA: standard.2010.01.21
It looks something like you'd see when the iron curtain was up or something."
VOA: standard.2010.02.17
All sizes of particles they collected contained a lot of iron - up to half of their weight.
BBC: Railway tracks
All around us are bare timetable boards and iron rails swallowed up by long grass.
BBC: East Africa��s best kept secret
Since the proverbial iron curtain went up in 1991, Russians have lagged in the startup race.
FORBES: Farminers Startup Academy: Unleashing Russian Entrepreneurship
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