The formation process of the SPT nanopowders under ultrasonic action goes through two steps. First is the formation of the titanium hydroxide gel through the hydrolysis of TiCl4, and then the Sr2+ and Pb2+ are diffused to the titanium hydroxide gel surface. After this, they are combined with the titanium's hydrous nucleus to form the SPT nanoparticles under the effect of ultrasound.
超声化学法合成SPT纳米粉的反应分两个过程进行：首先TiCl4水解形成富钛凝胶；然后在超声影响下，溶液中的Sr2+和Pb2+扩散到钛凝胶表面，并以其为核生成SPT纳米颗粒。
After manifestative stage of the disease RHDV gradually diffused from nucleus into cytoplasm and reached a maximum in cytoplasm at agonal stage.
疾病后期，核内的RHDV颗粒通过破损的核膜或核崩解向细胞浆扩散。
The halo nucleus is a weakly bound system, which has very peculiar properties. Usually it is considered to have a few-body structure, which is composed of a core and valence nucleons with a large diffused density distribution.
晕核是弱束缚系统，具有非常特殊的性质，最外层的价核子具有非常弥散的空间分布，通常采用核芯加晕核子的少体结构近似。