保險彈簧

Chinese

to assure; to guarantee; to be bound to
to assure; to guarantee; to be bound to; to be sure to
 
 spring
trad. (保險彈簧) 保險 彈簧
simp. (保险弹簧) 保险 弹簧

Pronunciation

Noun

保險彈簧

  1. relief spring
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