English translation for "天然隧洞"

natural tunnel
tunnel cave

Related Translations:

钢筋混凝土衬砌隧洞:  reinforced concrete lined tunnel

天然通风:  natural draft ventilationnatural ventilation

天然外观:  natural looking

天然氧化铁:  natural iron oxide

天然软木:  natural cork

天然硫酸钡:  barytenative sulfate of barium

天然土壤:  natural soil

天然团粒:  natural granule

天然硫:  burnstone

天然状态:  native state

Similar Words：

"天然塑性材料" English translation, "天然宿主" English translation, "天然酸" English translation, "天然酸乳酒" English translation, "天然酸乳酒〔不加糖和香料的" English translation, "天然碳沥青" English translation, "天然碳氢化合物" English translation, "天然碳酸钙" English translation, "天然碳酸钠" English translation, "天然炭" English translation