key materials

• 关键材料

key materials的用法和样例：

例句

1. Melamine phosphate is the key material to guarantee the comprehensive performances for insulting layer.
   三聚氰胺磷酸盐是保障绝热层综合性能的关键材料。
2. Power battery is the key link in electric auto industry, and hydrogen alloy is the key material impacting the performance of Ni-MH battery.
   动力电池是电动车产业链的关键环节，贮氢合金又是决定镍氢电池性能的关键材料。