The study advanced the evidence for building the damage theory of frozen soil.

研究结果是建立冻土损伤理论的前提和基础。

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Packing shall be done not to cause damage or soil during delivery.

包装方式必须保证在运输过程中避免损伤及污染。

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Packing shall be done not to cause damage or soil during delivery.

包装方式必须保证在运输过程中避免损伤及污染。

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