The traditional mechanical transmission can not solute the fluctuations and shock of load.
传统的机械传动对负荷波动和冲击是无法解决的。
In this paper, the recent researches on the movement and transport of the water, solute, nutrient and bed-load in farmland ecosystem are reviewed and the research prospects in future are pointed out.
对近年来国内外农田生态系统中的水分、溶质和养分迁移的研究工作进行了评述,并指出了需进一步研究的问题。
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