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to phrases
材料系数
econ., construct.
material factor
nautic., tech.
material factory
材料
安全
系数
econ.
material factor
材料系数:
18 phrases
in 9 subjects
Aviation
3
Bridge construction
4
Business
1
Footwear
1
Hydroelectric power stations
3
Metallurgy
1
Rail transport
1
Refrigeration
1
Technology
3
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