1.
Os(atomic No76)
(一种金属元素) 锇
2.
Polonium is a naturally radioactive metallic element.
钋是一种具有天然辐射性的金属元素。
3.
a hard brittle blue-gray or blue-black metallic element that is one of the platinum metals; the heaviest metal known.
一种硬而脆的蓝灰色或蓝黑色金属元素，铂系金属，已知最重的金属。
4.
a radioactive element of the alkali-metal group discovered as a disintegration product of actinium.
一种碱金属属的放射性元素，是锕瓦解的产物。
5.
a trivalent metallic element of the rare earth group; usually occurs in association with yttrium.
一种稀土属的三价金属元素，通常与钇共生。
6.
A metallic mixture, once considered an element, composed of neodymium and praseodymium.
钕镨合金一种金属混合金属，曾被当作一个元素，是由钕和镨组成的
7.
a soft silvery metallic element of the alkali earth group; found in barite.
一种软质银色的金属元素，属碱土金属，见于重晶石中。
8.
a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium.
一种重而脆的铂属金属元素，用于制合金，与铂或锇形成天然合金。
9.
a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures.
银色有毒金属元素，重，单价或二价，唯一一种在常温下呈液态的金属。
10.
Any of a number of elements, such as oxygen or sulfur, that lack the physical and chemical properties of metals.
非金属一种元素，如氧或硫，其没有金属的物理和化学性质
11.
a light strong brittle gray toxic bivalent metallic element.
一种灰色有毒的二价金属元素，轻质、坚韧、易碎。
12.
a hard brittle blue-white multivalent metallic element; resistant to corrosion and tarnishing.
一种多价金属元素，坚硬、易碎、蓝白色，防腐防锈。
13.
a rare polyvalent metallic element of the platinum group; it is found associated with platinum.
一种稀有的多价铂系金属元素，与铂共生。
14.
Selenium is one of the most important metalloid element existing in biotic environment.
硒是生物环境中存在的一种重要的类金属元素。
15.
" Iridium： Metallic chemical element, one of the transition elements, chemical symbol Ir, atomic number 77."
铱:金属化学元素，为过渡元素的一种，化学符号Ir，原子序数77。
16.
"Iron: Metallic chemical element, one of the transition elements, chemical symbol Fe, atomic number 26."
铁:金属化学元素,为过渡元素的一种,化学符号Fe,原子序数26。
17.
a ductile gray metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group.
一种有延展性的灰色金属元素，用作打火石，稀土属元素中含量最丰富的一种。
18.
a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group.
稀土属的三价金属元素，一种可延展的银白色铁磁体。