hollowadj.空的;空洞的;凹陷的;虚伪的;(声音)沉闷的n.山谷;洞;窟窿vt.挖空vi.形成空洞adv.完全地;彻底
hollow pen空心笔
hollow bit空心钻
hollow roll卷筒接头,空心辊
hollow bead空心颗粒
hollow unit空心构件
hollow tube空心管
hollow jack空心千斤顶
hollow zrve管状神经
hollow seal空心密封圈
hollow core中空型芯