seacoal造句

例句与造句

1. seacoal for green sand mold
   湿型铸造用煤粉
2. test mothod for effective bentonite and effective seacoal content in green molding sand
   铸造用湿型砂有效膨润土及有效煤粉。试验方法
3. It's difficult to find seacoal in a sentence. 用seacoal造句挺难的