precipitation form

The nano TiO2 powder has been made by water-heat reacting precipitation process. The determination of diameter. Phase analysis and the observation of form and face of TiO2 powder have been made by x-ray diffractometer and TEM.

采用水热反应沉淀法制备纳米TiO2粉体，并用X射线衍射，TEM对其进行粒径测定、物相分析和形貌观察。

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In the polyvinyl alcohol ( PVA) medium, potassium can react with sodium tetraphenylboron to form a stable colloidal precipitation. Beer's law is obeyed in the range 0~ 1.0 mg/ 25 mL.

研究了在聚乙烯醇介质中，利用钾离子与四苯硼钠形成稳定的胶体沉淀可测定钾含量，钾量在0～1.0mg/25mL范围内符合比耳定律。

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In double immunodiffusion, it reacted with antiserum against serum DBPs from mice with Ehrlich Ascites Carcinoma to form one precipitation band, but did not react with antiserum against serum DBPs from normal mice.

在免疫双扩散反应中，它与抗艾氏腹水癌患鼠血清DNA结合蛋白的兎抗血清反应形成一条沉淀线，但与正常小鼠血清DNA结合蛋白的兎抗血清不形成沉淀线。

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Form scale parameter we can see that probability of precipitation of rain day become bigger on the middle and lower reaches of Changjiang River, and discrepancy between upriver and the middle and lower reaches of Changjiang River also become bigger, the other areas change unapparent.

而由尺度参数推得长江中下游地区日降水量大的概率增大，且与长江上游降水量相差幅度变大，其他地区变化不显著。

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It is found that Ge not only can promote the out-diffusion of oxygen and form wider DFZ in Ge-Doped CZSi wafer than that in the control sample, but also can suppress the formation of precipitation.

发现直拉硅中杂质锗的存在可促进氧的外扩散，抑制氧沉淀的发生并可形成较宽的清洁区。

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