1.
In persons over 35, periodontal disease causes the loss of more teeth than does dental caries, or decay.
在35岁以上的人中，牙周病引起的脱齿比龋齿还多。
2.
ANALYSIS ON CAUSE OF CHAIN DISENGAGES TOOTH AND THE MEASURE OF AMELIORATION IN 105 M~2 COOLING BELT MACHINE
105m~2带冷机链条脱齿的原因分析与对策
3.
She is losing her baby teeth and getting permanent teeth.
她的乳齿正在脱落，以及生恒齿。
4.
The teeth of the wheel became disengaged and the machine, out of gear, stopped working.
轮齿松开了，机器因齿轮脱开而停止了运行。
5.
Unserewing Mould with Sidelong Rotating Core Through Rack and Pinion-gearing
齿轮-齿条传动横向型芯旋转脱螺纹注塑模
6.
threw the machine's pinion out of gear.
使机器的小齿轮脱开啮合。
7.
Thermodynamics of Desulphurization of Gear Steel 20CrMoH
齿轮钢20CrMoH脱硫的热力学研究
8.
The trunnion sprocket has come off the pinion,but do not worry - we'll soon but that right.
耳轴链齿脱离齿轮，不过不要紧——我们马上可以修好。
9.
The changes of teeth color wer e evaluated by VITA shade guide matching,and the sensitivity of tooth were recor ded.
用VITA比色板作脱色前后比色 ,分析脱色效果 ,观察牙齿敏感情况。
10.
To remove calcium or calcium compounds from(bones or teeth, for example).
去钙从（例如，骨头或牙齿）脱去钙或钙化合物
11.
And increased seerity of periodontitis, for example with recent tooth loss, had the greatest risk.
严重牙周炎，如近期伴牙齿脱落者危险性更高。
12.
Study on relationship of tooth drop by boxing and periodontopathy in forensic science;
拳击致牙齿脱落与牙周病关系的法医学研究
13.
Performance Test of Short-rasp-bar of Axial Flow Threshing and Separating Unit
短纹杆-板齿式轴流脱粒分离装置性能试验
14.
The infection may damage the bone that supports the teeth and cause tooth loss and other health problems.
这种感染可能会伤及支撑牙齿的骨骼，然后造成牙齿脱落和其他健康问题。
15.
Twenty primary (Baby) teeth come in by age 2 1/2 and fall out Between ages 5 and 13 to be replaced by 32 permanent teeth.
人类有20颗乳齿,二岁半时长全,五～十三岁时脱落完全,由32颗恒齿取代。
16.
A device for shifting gears on a bicycle by moving the chain between sprocket wheels of different sizes.
脱轨器，转撤器通过在不同大小的扣链齿轮间移动链条而转换自行车齿轮（换档）的装置
17.
Periodontal disease is a chronic bacterial condition associated with receding gums and tooth loss.
牙周病是一种慢性细菌感染性疾病，会引起牙床萎缩和牙齿脱落。
18.
The clinical feature and operating manner of ora serrata dialysis and retinal detachment in 50 cases (53 eyes)were reported.
报告50例（53眼）锯齿缘断离视网膜脱离的临床特点与术式。