casting sand的用法和樣例：
例句
- A new type of sand storage silo with local fluidization and siphon discharging is recommended.
提出了局部流態(tài)化虹吸卸料的新型砂倉。 - This project aims to develop an auto-control unit of a direct-control optimizing system of green sand quality for a sand mixer.
本課題的目的在于研制一種用于型砂質(zhì)量直接優(yōu)化控制系統的混砂機加料自動(dòng)控制單元。
