... 伸缩式推进装置 retractable drive unit 升降桅 retractable mast 退滩[船艉]锚(登陆舰) retracting anchor ...
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retractable mast housing 升降桅围阱
retractable tubular mast 可收缩桅管
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From the Juggernaut's back extends a tall retractable sensor mast, in which sits a lone spotter and sensor operator.
“主宰者”的后部竖立着一根可收放的传感天线杆，里面坐着一名校测员。
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