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split pin
archit.	开口尾销
dril.	开尾销子
mech.eng.	开尾〔开口〕销
met.	开尾销
tech.	防松螺钉
wind.	开口销
split cotter pin
chem.	开尾销

split pin: 15 phrases in 5 subjects

Automobiles	3
Chemistry	1
Compressors	1
Nautical	1
Technology	9