boilers造句
Most
boilers have a lifespan of 15 to 20 years.
绝大多数锅炉有15至20年的使用期限。
The clean coal is sent to a crusher and the
boilers.
干净的煤送入破碎机和锅炉.
Conversely, test made in full - scale
boilers are usually difficult to reconcile.
与此相反, 在工业规模的锅炉内所做的试验,也难于互相一致.