combination of materials

• 组合材料,材料组合

combination of materials的用法和样例：

例句

1. The combinations of materials that can cause interferences in the determination of a particular element are numerous.
   测定某一特定元素时，能引致干扰的材料组合是复杂繁多的。
2. Vinyl polysiloxane impression materials must not be combined with condensation type silicones or polyether impression materials.
   乙烯基聚硅氧烷一定不要与缩合型硅树脂或聚醚印模材料组合使用。