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 fiber renewal liquid membrane中空纤维更新液膜hollow-core photonic crystal fiber空芯光子晶体光纤hollow sheath-core composite fiber中空皮芯复合纤维hollow fibers type artificial kidney空心纤维型人工肾hollow-cathode copper halide laser空心阴极卤化铜激光器hollow fiber uhrafiltration membrane中空纤维超滤膜hollow fiber nanofiltration membrane中空纤维膜hollow fiber solvent microextraction中空纤维膜液相微萃取hollow section steel tubular trusses钢管桁架hollow fiber microfiltration membrane中空纤维微滤膜