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piston type
agric.	活塞型
auto.	活塞型式
tech.	活塞式

piston type : 141 phrases in 21 subjects

Agriculture	4
Automobiles	26
Aviation	2
Chemistry	3
Compressors	2
Drilling	3
Electric machinery	1
Electronics	1
Engineering geology	3
Hydroelectric power stations	1
Mechanic engineering	1
Metallurgy	2
Nautical	5
Oil / petroleum	4
Plastics	1
Rail transport	2
Refrigeration	4
Sealing	3
Shipbuilding	1
Soil science	1
Technology	71