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超硬铝 chāo yìnglǚ
gen.	superduralumin
busin.	super-super duralumin
mech.	extra super duralumin
met.	superduralumin (4.25Cu, 0.6Mn, 0.75Si, 0.5Mg,余量 Al); ultralumin (4Cu, 0.5Mg, 0.5Mn,余量 Al)
oil	ultraduralumin; ultralumin
shipb.	ultrastrength duralumin
tech.	ultra-duralumin
超硬〔超杜拉〕铝
construct.	super dural
SD 超硬铝
met.	SD alloy
24S 超硬铝
met.	24S alloy (4.1 〜4.3Cu, 1.2 ~1.6Mg,0.6Mn, <0.2Si, <0.2Fe,余量Al)
超级硬铝
tech.	super-duralumin

超硬 铝: 18 phrases in 5 subjects

Architecture	1
Aviation	4
General	1
Metallurgy	4
Technology	8