graded sand meaning in English
分选砂
级配砂
粒级砂
Examples
- Badly graded sand
级配不良的砂 - Powerful , dynamic sound with its lively spectrum of tonal nuances . top - grade sand cast iron is used for the cast iron plate , as it is the type of cast iron which is least prone to vibrating , thereby causing unwelcome interference
我们专门选用灰口铸铁来生产这种铸铁板，因为这种材料在所有铸件铸铁材料中最不易随声波产声振动，从而可以有效避免因这种振动所产生的会对钢琴声音有不良干扰。