hollowfoot秕谷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 wallboard molding machine空心墙板成型机hollow fibre for reverse osmosic反渗透纤维hollow fibre for reverse osmosis反渗透纤维hollow-eyed from lack of sleep因缺乏睡眠而双眼凹陷的hollow containers leak detection中空容器检漏hollow cathode metal vapor laser空心阴极金属蒸气激光器hollow sphere vanadium pentoxide五氧化二钒中空微球hollow floorslab cast-in place现浇空心楼板hollow-through type DTH hammer贯通式潜孔锤hollow hot plate hydraulic press空心热板水力压呢机