Because of the pollution, the content of Fe in plant can not be obtained by the normalabsorption law.
铁的测定由于污染原因，以致测试结果不能正确反映植株对铁的吸收规律。
2
The sample pre-treatment during setting up the correcting model by partial least-squares (PLS) and the way of optimizing wavelength according to normalabsorption peak are discussed.
讨论了采用偏最小二乘法（PLS）建立校正模型过程中样品预处理及利用常规吸收峰优选波长的方法。
3
Dust absorption in the optical drive, keyboard, mouse, and other components used will affect the normal operation of these parts (of course also affects the service life).