田间土壤水分、盐分和温度变化使水、盐、热耦合迁移的过程极其复杂。
The variation of soil water, salinity and temperature in the field makes the coupled transport processes of them very complicated.
利用土壤水分迁移方程和热传导方程，采用中心差分格式并在一定假设前提下建立起冻土水热耦合迁移数学模型。
Based on the basic equations of simultaneous soil water and heat transfer during soil freezing, the coupled equation of moisture and heat is deduced.
核心建议是让公司在保留其当前遗留应用程序组合的价值的同时，逐渐地迁移到可促进松散耦合的体系结构的新技术。
The core recommendation is for the company to retain the value of its current legacy application portfolio while gradually migrating to new technologies that promote a loosely coupled architecture.
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