high-tech castoff

• 高科技废弃物

high-tech castoff的用法和样例：

例句

1. Fly ash was a sort of industrial solid castoff which could be utilized again.
   粉煤灰是一种可再资源化的工业固体废弃物。
2. The utility model uses the castoff as material to reduce the production cost, and prepares new products.
   本发明提供的制备方法，利用废弃物为原料降低了生产成本，制备出全新的产品。