为进一步扩大碱真空脱水技术的应用范围，提高破结构质量，我们在低温条件下?。

Therefore, a new construction technology was formed practically for concrete in the low temperature.

youdao

为进一步扩大碱真空脱水技术的应用范围，提高破结构质量，我们在低温条件下?。

Therefore, a new construction technology was formed practically for concrete in the low temperature.

youdao