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spring points
commun., railw.	弹簧道岔 (switch)
tech.	弹簧转辙器
spring point
construct.	弹簧道岔
tech.	弹簧岔; 弹簧开关; 起拱点; 弹簧撤叉【铁】

spring points : 4 phrases in 2 subjects

General	1
Technology	3