The result shows that the argon gas can effectively decrease the hardness gradient and improve the thermal fatigue behavior of ion nitriding steel H13.
结果表明：氩气能有效降低渗层的硬度梯度，提高离子渗氮h 13钢的热疲劳性能。
This behavior will be helpful to decrease temperature gradient and to lessen surface thermal stress of concrete structure so as to prevent cracking of a structure.
上述特性将有助于减小混凝土内部温度梯度，对于防止水工混凝土结构表面裂缝起到良好的作用。
Residue and behavior of qingkuling in rice was studied by washing-gradient of liquid chromatography.
借助高效液相色谱梯度淋洗分析技术，研究了青枯灵在水稻中的降解与残留行为。
Circle water flow system and high hydraulic gradient are applied. The experiment is carried out and the behavior of non-Darcy water flow with high velocity is studied.
试验研究宽裂隙高水力梯度下的非达西渗流运动规律，建立流速与水力梯度的非线性关系曲线。
Circle water flow system and high hydraulic gradient are applied. The experiment is carried out and the behavior of non-Darcy water flow with high velocity is studied.
试验研究宽裂隙高水力梯度下的非达西渗流运动规律，建立流速与水力梯度的非线性关系曲线。
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