large concrete project的用法和樣例：
例句
- The temperature rift is a problem of easy occurring in large volume concreting.
大體積混凝土施工的一個(gè)特點(diǎn)是容易產(chǎn)生溫度裂縫。 - But construction cracks in massive concrete frequently occur, which leads to lower ray-shielding efficiency.
但大體積混凝土施工中常會(huì )產(chǎn)生施工裂縫，以致降低了它防放射作用的效果。
