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frictional material
frictional material
tech.
摩擦材料
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test machine
test machine
automat.
检验机
;
材料试验机
to phrases
frictional material
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tech.
摩擦材料
frictional material
:
5 phrases
in 4 subjects
Metallurgy
1
Mining
1
Sealing
1
Technology
2
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