本文对碳钢被覆金属碳化物过程中碳原子的迁移扩散行为进行了讨论。
In the process of coating layer's growing, carbon atoms diffuse from the inside of steel to the surface and react with external metal atoms to from a metallic carbide.
本文采用二维水质数学模型，研究南洞庭湖污染物质迁移扩散与混合的运动规律。
Mixing and dispersion of pollutants in South Dongting Lake was studied with a two-dimensional mathematical model for water quality.
不同结构的接枝共聚物对温度的敏感不同，较高温度区间的温度变化对体系迁移扩散的影响更明显。
The sensitivity of PPg-PEG with different structure to temperature was different, the effect of the changes of higher temperature on the diffusion was more obvious.
为了指导矿区地下水污染的控制与治理，需要研究污染物在地下水中迁移扩散的规律及其污染特征。
In order to guide control and harness of groundwater of mining area, have need of making a study of transition regulation and contaminative characteristic of contaminant in the groundwater.
为防止放射性核素的迁移扩散，迫切需要一种低廉有效的处理方法对日益增多的低浓度含铀废水进行治理。
The paper pointed out that the combination of those treatments would achieve a better result for treatment of low concentration uranium-bearing wastewater.
为防止放射性核素的迁移扩散，迫切需要一种低廉有效的处理方法对日益增多的低浓度含铀废水进行治理。
The paper pointed out that the combination of those treatments would achieve a better result for treatment of low concentration uranium-bearing wastewater.
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