At this stage, the tooth can repair the weakened area with the help of fluoride and minerals in saliva.
在这个阶段，牙齿可以借助唾液中的氟化物和矿物质修复脆弱的部位。
A new book, Sarah from Alaska, details how the then state governor fought tooth and nail to introduce Sen McCain on stage in his home town of Phoenix, Arizona, in the early hours of the morning.
一本名为《来自阿拉斯加的莎拉·佩林》，详细描述了在麦凯恩的家乡亚利桑那州菲尼克斯，这位当时的阿拉斯加州州长如何在清晨的几个小时里声嘶力竭地在舞台上介绍麦凯恩参议员。
The single stage skewed tooth cylindrical gears reduction gear optimized design, is a multi-objective optimization question.
单级斜齿圆柱齿轮减速器的优化设计，是一个多目标优化问题。
Human tooth development is a consecutive process, which includes bud stage, cap stage, bell stage and tooth root development.
人类牙齿发育是一个连续的过程，经历了蕾状期、帽状期、钟状期和牙根发育期。
On the basis of research on the tooth -shape of single stage seal, a new type tooth - shape of multistage seal is suggested.
在对磁流体单级密封齿形研究基础上，提出了一种新型多级密封齿形结构。
This article, first, mathematical models of one kind of gear fault in one— stage gearbox (the fatigue crack on root of tooth) are established on the basis of gear dynamics.
本文以齿轮动力学为基础，推导并建立了单级齿轮传动的一种齿轮失效的数学模型，即：齿根裂纹数学模型。
Conclusion: Shh and its receptor are expressed during the late bell stage of mouse tooth germ.
结论：Shh及其受体Ptc在小鼠牙胚钟状晚期有表达。
The structure parameters have some relation with the vibration behaviors for the reducing box with two stage split flow Novikov gear of with double circular arc tooth profiles.
二级分流式双圆弧齿轮减速箱结构参数对其振动特性有一定的影响。
Regular use of Xylitol has been shown to help reduce dental plaque - the first stage of cavity development, tartar formation and tooth staining - and promote better oral health.
有显示说常吃木糖醇有助于减少齿菌斑——蛀洞，牙石，牙渍形成的第一步——还有提高口腔的健康。
Human tooth development is a consecutive process, which includes bud stage, cap stage, bell stage and tooth root development.
人类牙齿的发育，经历蕾状期、帽状期、钟状期、牙根发育和牙齿萌出期。
Human tooth development is a consecutive process, which includes bud stage, cap stage, bell stage and tooth root development.
人类牙齿的发育，经历蕾状期、帽状期、钟状期、牙根发育和牙齿萌出期。
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