沉积物的颗粒组成、结构、密度、含水率等决定了冲刷率与剪应力的变化关系。
The relationship between erosion rates and shear stress was determined by the particle composition, structure, wet density and water content of the sediment.
采用自行研制的加载装置，配装在光学体视显微镜下，观测了珊瑚砂土在加载过程中微结构的变化及颗粒滑移的全过程。
In this paper, the variation of microstructure and the complete process of grain slide during loading of the coral sand are observed with the optical microscope and the self-developed loading device.
利用扫描电子显微技术和多功能偏光显微技术系统研究三氯氧磷交联淀粉在生物降解过程中的颗粒形貌和结晶结构变化情况。
The appearance and crystal structure change in the biodegradation of partially degraded starch granules were examined using SEM technology and multifunctional polariscope.
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