n.金属鉴别仪...

metals的音标：metals的英式发音音标为：['metlz]metals的美式发音音标为：['metlz]...

metalsorter的音标：metalsorter的英式发音音标为：['metl'sɔ:tə]metalsorter的美式发音音标为：['metl'sɔtə]...

Lead was one of the metals known to the ancient world.铅是早在古代就已知的金属之一。Metals expand when they are heated.金属受热会膨胀。What spurred them on was alchemy, the'science " of changing ordinary metals into gold.激励他们的是炼金术, 即把普通金属...

n.金属( metal的名词复数 )，钢轨，五金...

refractory metals难熔金属For processing the high tensile metals: carbon stell common alloy stell, hard bronze forgeable castiron. etc.加工高抗张强度的金属: 碳素钢 、 硬青铜和可锻铸铁等.Gold retains its lustre for far longer than other metals...黄金保...