concrete work的用法和樣例：
例句
- This paper analyzes the cause and precautionary measures of concrete structure shrinkage crack.
摘要文章主要分析了混凝土工程收縮裂縫成因，提出了預防措施。 - This paper probes into filling and pozzuolana effects of fine silicon powder, analyzes its influence on concrete properties and application in concrete engineering.
對微硅粉的填充效應和火山灰效應做了探討，分析了微硅粉對混凝土性能的影響和在混凝土工程中的應用。
