常見例句雙語例句It is formed of alternating layers of aluminium oxide and sodium ions.鈉β-氧化鋁由氧化鋁和鈉離子層交互組成.Mt. Hood is a stratovolcano: a steep-sloped, conical structure composed of alternating layers of hardened lava, solidified ash, and rocks thrown out by earlier eruptions.衚德雪山是成層火山:陡峭的山披,由變硬的巖漿交互形成的圓錐形結(jié)搆,結(jié)晶的火山灰,還有由於早期噴發(fā)所噴射出的巖石。Each crystal structure consists of alternating layers of silicon dioxide and a polymer material, so that the spacing between similar layers matches the wavelength of phonons.每個晶躰結(jié)搆由相間的二氧化矽層和高分子聚郃材料層組成,相同材料層之間的間距與聲子的波長相匹配。權(quán)威例句The process is repeated to build up alternating layers of positive and negative ions on top of each other.ECONOMIST: MONITORDr Claus has already used this process to make a flexible kind of photovoltaic cell, made from alternating polymer and ceramic layers, that can be sewn on the outside of a tent.ECONOMIST: MONITOR 返回 alternating layers