turnbuckle
音標['t?:n,b?kl] 讀音漢語翻譯
n. 鬆緊螺旋扣
【機】 鬆緊螺旋扣
英文解釋：
名詞 turnbuckle:
- an oblong metal coupling with a swivel at one end and an internal thread at the other into which a threaded rod can be screwed in order to form a unit that can be adjusted for length or tension