mixer curing

例句：

1. 1. The concrete mixer was used to mix the cement and sand.
   混凝土搅拌机用来搅拌水泥和沙子。
2. 2. The curing process is crucial for the strength of the concrete.
   养护过程对于混凝土的强度至关重要。
3. 3. The engineer mixed the materials carefully before starting the curing process.
   工程师在开始养护过程之前仔细混合了材料。