The key point for its mechanical construction is construction technology of concrete track beds.
桥上旭普林无砟轨道机械施工的重点是混凝土道床板的施工技术。
Therefore, a new construction technology was formed practically for concrete in the low temperature.
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.
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?。
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