钨精矿的英文怎么说
钨精矿的英文: n. 钨,钨锰铁矿,金属元素 The vital part of the incandescent electric lamp is the tungsten wire inside the bulb We make an electron gun which consists of a tungsten wire heated by an electric current This film type can also be used in tungsten or fluorescent lighting if a suitable filter is put in front of the lens or light source. Edison's efforts to invent an electric light bulb did not pan out until he used tungsten wires. Raw and Auxiliary materials: iron powder, copper powder, tungsten powder, tungsten-carbide powder, stainless (high-speed) steel powder, magnetic material, ceramic material, nanophase material and other metal powders and alloy powders. v. 集中;聚集;全神贯注;浓缩;富集 n. 浓缩;浓缩物 concentrate troops at a strategic point Samarium europium gadolinium concentrate Ansar Concentration (detention) Camp Industrial development is concentrated in the Northeast. It consists of a pair of concentric cylinder. |