The criteria for tooth selection dictated no pretreatment with a chemical agent such as alcohol, formalin, or hydrogen peroxide, or any other form of bleaching.
牙齿挑选标准规定未做过像酒精、甲醛、过氧化氢和其他漂白剂等化学用品预处理。
Indeed, Darwin's Origin of -species by Means of Natural Selection, -published in 1859, seemed to vindicate Tennyson's adage from 20 years -earlier, of "nature red in tooth and claw".
实际上，1859年出版的达尔文著作《物种起源》似乎印证了坦尼森此前二十年的名句——“在尖牙利爪之下，自然是红色的”。
The paper describes the selection of two important design parameters-tooth ta-per and cutter diameter.
论述弧齿锥齿轮的两个重要参数——轮齿收缩型式和刀盘直径的正确选择。
Objective Discussing the selection and effect after cosmetic prosthesis for the patients who perform crown lengthening after superior anterior tooth injury.
目的：对于上前牙外伤后行牙冠延长术的患者，探讨其术后美容性修复方法的选择及其效果。
The principle for the selection of technology parameter and the main points for processing the tooth surface by scraping with the carbide hob were stated.
介绍了中硬齿面齿轮的刮削工艺，叙述了用硬质合金滚刀对齿面进行刮削加工的工艺参数选择原则及刮削要点。
While in the design of this permanent magnet starter with CAD, the voltage drop of brushes can be described with a value of resistance, the selection of tooth length must be...
在用计算机辅助设计永磁减速启动机时，电刷接触压降可用一个电阻值来描述，步长的选择要合理，循环变量不能混淆。
The values based on the three stimulation value were adopted for the colour selection and tooth colour matches from nine zone colors with 21 point smoothly transitional calculation.
采用一种基于三刺激值的相对选色方法及2 1点平滑牙色过渡算法的九分法的牙齿颜色匹配；
The values based on the three stimulation value were adopted for the colour selection and tooth colour matches from nine zone colors with 21 point smoothly transitional calculation.
采用一种基于三刺激值的相对选色方法及2 1点平滑牙色过渡算法的九分法的牙齿颜色匹配；
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