The driving force of moisture migration in soil is the key of discussing the mechanism of freezing ice and frost heave and the stress of freezing soil.

土中水分迁移的动力势问题是探讨水分迁移成冰机理以及研究冻胀、冻土内应力等冻土工程问题的关键所在。

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Cucumber requires high soil moisture, it almost suffers drought stress by cultivating and managing improperly in actual production, leading to reduction of output and low quality.

黄瓜对土壤的湿度条件要求较高，在实际生产中经常会因栽培管理不善受到干旱胁迫的影响，造成减产和品质下降。

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Salt expansion processes in subgrade of Sulfuric saline soil are the external performance of moisture temperature, salinity and stress fields interacting with each other.

硫酸盐渍土路基水分场、温度场、盐分场和应力场相互影响，相互作用，其盐胀的过程就是四场相互交融的外在表现。

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