保持器是为了巩固牙颌畸形矫治完成后的疗效、保持牙位于理想的美观及功能位置而采取的措施,叫做保持。而此时戴用的称为保持器。在矫正完牙齿,取下矫治器后,因为牙齿在新的位置上还不稳定,往往还要戴上保持器,来保持牙齿在牙槽骨上的新的位置,等待牙槽骨的改建。
热压膜透明联冠保持器的临床应用研究 齿科美容-齿科美容-美容前线 关键词]保持器;正畸学;临床应用 [gap=1703]Key words: retainer; orthodontics; clinical application
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... Medical science technician 释义:医学科学技术人员 maintainer 释义:保持器,维修人员 WHSP 释义:[=White House Science Presence]白宫科学人员 ...
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滚珠轴承基本包括四个元件:滚珠(ball)、内圈(inner ring)、外圈(outer ring)与保持器(cage or retainer),一般工业用的滚珠轴承满足AISI 52100的标准,滚珠与圈通常是以高碳铬钢制成,洛氏
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假如第二颗乳牙过早脱落,那摸装上间隙保持器是件要紧的事。
It's very important to make a space maintainer if the second deciduous molar is lost too soon.
现在,控制器类是设计实现系统商业逻辑填充的一个或多个类的位置保持器。
For now, a controller class is a placeholder for one or more classes that would be fleshed out during design to implement the business logic of your system.
论文采用分数阶保持器(FROH)代替传统的零阶保持器(ZOH),对减摇鳍系统进行数字控制设计。
This paper USES fractional order hold (FROH) to replace the traditional zero-order hold (ZOH), designs a numerical control system for the fin.
Maybe you don't control thermostats in your dorm room, some of you do and some of you don't probably, and maybe it doesn't work very well so it might not be a good example, but imagine a perfect thermostat that you set for a temperature and then the temperature stays the same inside the room no matter what the temperature is outside.
可能你根本就不理卧室里的恒温器,有些人去调它,有些人就置之不理,可能它压根就是坏的,所以这个例子也许并不恰当,但你还是想象一个完美运行的恒温器,你设定温度后房间里的温度就保持不变,不管外面温度是多少
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