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。
By investigating and analyzing current environment, social and economy condition, the mechanism of land driving force was deeply discovered in the study area of Jinhua city.
通过社会经济环境现状调查分析，对金华市区土地利用变化驱动力机制进行深入地研究。
The design of JL 1075 combine harvester generally divide four system which include cutting mechanism system, force by wheel driving system, chain transmission and force auxiliary system.
JL 1075联合收获机低割装置的设计大体分为四大系统：切割系统、地轮驱力系统、链传动系统和动力辅助系统。
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