The result indicated that support vector machine method has the obvious superiority in the forecast of breast cancer incidence rate based on gain quantity of trace element.
结果表明：在根据微量元素摄入量进行乳腺癌发病率预测方面，支持向量机方法有明显的优势。
2
The quantity of trace arsenic in grain and soil was determined by hydride nondispersion atomic fluorescence method.
本文采用氢化物无色散原子荧光法测定粮食和土壤中微量砷含量。
3
Trace-quantity phenol in raw water was removed rapidly and effectively by PAC absorption and bio-degradation.