话语

A hard malleable ductile silvery metallic element that is corrosion used in alloys occurs in pentlandite and smaltite and garnierite and millerite .

一种硬而软的银色金属元素，可锻造，抗腐蚀，用于合金中，见于硫镍铁矿，砷钴矿，硅镁镍矿，针镍矿中。

In order to study the combustion mechanism of combustible materials under low pressure and low oxygen concentration in Tibet, a set of heptane fire experiments were conducted in Lhasa and Hefei respectively.

为了研究西藏高原低压低氧环境下可燃物的燃烧特性，在拉萨和合肥两地进行正庚烷油盘火燃烧对比实验。