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noun
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verb
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to phrases
toughening
['tʌfniŋ]
n
industr., construct., met.
harden
toughening
v
industr., construct., met.
voorspannen
toughening:
14 phrases
in 7 subjects
Chemistry
1
Electronics
2
Health care
1
Industry
5
Information technology
1
Nuclear physics
1
Transport
3
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