基本解释蝸杆；無止螺鏇；螺鏇杆词组短语短語endless tangent screw sextant 無限正切螺絲型六分儀;[水運]微調螺杆六分儀endless tangent screw [水運]微調蝸杆螺釘endless s screw 蝸杆elevating endless screw 陞降蝸杆endless screw worm 蝸杆endless screw更多词组专业释义經濟學蝸杆