OBJECTIVE To investigate the formation process and dynamic changes of important physical parameters of PLGA micro-sphere, including particle size and its distribution, specific surface area.
目的研究微球形成的动态过程及其相关物理参数的变化特征。
A new approach is introduced for obtaining the dynamic flexibility of soil layer with variable physical parameters.
介绍一个求解变参数层状地基动力柔度系数的近似求解方法。
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