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ball test
dril. 布氏硬度试验
oil 钢球试验
tech. 球印硬度试验; 球印试验; 球压试验; 落球试验; 滚球抗阻塞试验 (排水系统中)
ball hardness test
met. 布氏硬度试验
ball test: 74 phrases in 18 subjects
Architecture2
Automobiles1
Aviation1
Chemistry2
Construction1
Drilling1
Electric machinery2
Electronics1
Engineering geology2
General1
Metallurgy5
Oil / petroleum6
Plastics6
Polymers5
Space3
Technology33
Wind Energy1
Wood processing1

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