noun🔗Share芯轴，心轴。 A round object used as an aid for shaping a material, e.g. shaping or enlarging a ring, or bending or enlarging a pipe without creasing or kinking it."The jeweler used a mandrel to enlarge the silver ring. "珠宝匠用芯轴来扩大这个银戒指的尺寸。materialtechnicalindustrymachineChat with AIVocabulary GamePractice Reading
noun🔗Share心轴，芯轴。 A tool or component of a tool that guides, grips or clamps something, such as a workpiece to be machined, a machining tool or a part while it is moved."The machinist used a mandrel to hold the metal pipe securely while threading it on the lathe. "那位机械师用心轴牢牢地固定住金属管，以便在车床上进行螺纹加工。technicalmachineindustrypartdeviceworkChat with AIVocabulary GamePractice Reading
