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EN2557
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1.
AEROSPACE
SERIES
.
CARBON FIBRE
PREIMPREGNATES
.
DETERMINATION
OF
MASS
PER
UNIT
AREA
.
(
EUROPEAN
STANDARD
EN 2557
)
.
航天航空
系列
.
碳纤维
增强
保
混
剂
.
每
单位
面积
质量
的
测定
(
欧洲
标准
EN2557
)
háng tiān háng kōng
xì liè
.
tàn xiān wéi
zēng qiáng
bǎo
hún
jì
.
měi
dān wèi
miàn jī
zhì liàng
de
cè dìng
(
ōu zhōu
biāo zhǔn
EN èr wǔ wǔ qī
)
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