absence and presence的用法和样例：
- Degradation of azo dye Acid Red B (ARB) over MnO2 in the absence and presence of ultrasonic irradiation has been investigated.
- Then, the binding of DTIC to DNA and DNA bases in the absence and presence of Au nanoparticles has been explored in this work by electrochemical study.
- The electrochemical behavior of the 1,4-Dihydropyridine Derivatives(1,4-DHP) on the GC electrode was studied by cyclic voltammetry in the absence and presence of calf thymus DNA(CT DNA).
- Adsorption and Desorption Processes of External Source Copper Ions Using Two Soils in the Absence and Presence of o- Phenylenediamine
- Palpate auricle for texture, tenderness, and presence of lesions.