root surface meaning in Chinese

齿根曲面

Water deficit is influenced by the level of soil water potential at the root surface .
水分亏缺是受根系表面土壤水势高低影响的。
Both ion diffusion and transport of ions to the root surface by mass flow appear to be dependent on soil moisture content .
离子扩散和通过质体流动把离子运送到根表面，看来似乎都取决于土壤的含水量。
Conclusion : root surface is the risk factor of mat canes
结论：根面是根龋的易感因素。
Ru1ls : the root surface with high root caries prevalence rate are labial surfaces of incisor and canine , mandibular premolar and molar , lingual surfaces of mandibular incisor and canine and maxillary molar , distal surface of premolar and mesial surface of molar
结果：根面龋易感性高的根面为前牙、下领前磨牙、磨牙的唇（颊）面、下前牙与上领磨牙的舌面、前磨牙的远中面、磨牙的近中面。