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nut lock
auto.	螺母锁紧固定; 锁紧螺母
mech.eng.	螺母锁紧〔保险〕
met.	螺母保险; 螺母锁紧
railw.	缩紧螺母
tech.	螺母锁紧动螺帽; 螺帽锁; 螺帽固定器

nut lock: 66 phrases in 15 subjects

Architecture	2
Automobiles	8
Aviation	2
Compressors	3
Construction	1
Drilling	1
Electric machinery	3
Hydroelectric power stations	2
Mechanic engineering	3
Metallurgy	2
Nautical	1
Oil / petroleum	1
Plastics	1
Technology	35
Wind Energy	1