metallic element

Polonium is a naturally radioactive metallic element.

钋是一种具有天然辐射性的金属元素.

Fluorine is the most electronegative metallic element widely distributed in nature, people exposure to fluoride through a variety of sources such as water, soil and air.

氟（fluorine，F）是电负性最强的非金属元素，广泛分布于自然界，人可通过各种来源如水、土壤、空气接触到氟化物。

Aluminium is a metallic element used in many important industries.

铝是工业生产的重要原料.

The study on mechanical properties is the basis for application of aluminum foam, it was not only predicted the compressive properties, but also extended the mechanical properties of metallic materials database through the simulation by finite element software.

力学性能研究是泡沫铝应用的基础，通过压缩性能模拟研究不仅可以预测多孔材料力学性能，还能扩展泡沫金属材料力学性能数据库。

A trivalent metallic element of the rare earth group, it could occurs with yttrium.

稀土属三价金属元素, 可以与钇共生.

Active carbon is a non-metallic element and is often used to filter and liquid or air.

活性碳是非金属元素,常被用来过滤和净化水或空气.

A soft gray ductile metallic element used in alloys; occurs in niobite; formerly called columbium.

一种灰色金属元素，软质，易延展，用于合金中，见于铌铁矿，以前称作钶。

A hard gray lustrous metallic element that is highly corrosion-resistant; occurs in niobite and fergusonite and tantalite.

一种坚硬有光泽的灰色金属元素，抗腐蚀性极强，见于铌铁矿、褐钇铌矿和钽铁矿中。

Niobium is the metallic element with the highest transition temperature.

铌是转变温度最高的金属元素.