2) tartar
[英]['tɑ:tə(r)] [美]['tɑrtɚ]
牙垢;牙石
3) odontolithiasis
牙垢症
4) scaler
[英]['skeilə] [美]['skelɚ]
牙垢除去器
5) Treponema denticola
牙垢密螺旋体
1.
The distribution of Porphyromonas gingivalis and Treponema denticola in different depth of periondontal pockets
牙龈卟啉菌和牙垢密螺旋体在不同深度牙周袋内的分布
6) Scale
[英][skeɪl] [美][skel]
垢
1.
The inhibition performance of four sorts of scale inhibitors is tested with static scale inhibition method in saturated brine under the conditions of high temperature,high pH,scale inhibitor PPH-3 then is produced.
通过静态阻垢试验方法,考查了4类阻垢剂在高温、高pH值饱和盐水中对CaCO3的阻垢性能,并在此基础上复配出PPH-3阻垢剂。
2.
scale removers, type JH (JH-211A, JH-213A, JH213B) and WS (WS-1), are developed.
针对油气田普遍存在ＣａＳＯ４垢且难以处理的问题，研制了两类新型ＣａＳＯ４垢除垢剂：ＪＨ类和ＷＳ类。
3.
It is found out that the evaporating heating area producing scale caused by the water quality and flame adhering to the wall are the main causes of cracking,and ways to handle the situation are proposed.
介绍了石门电厂 1 # 炉蒸发受热面水冷壁管环向裂纹失效情况 ,分析了因水质问题引起蒸发受热面结垢与火焰贴墙是产生裂纹的主要原因 ,提出了处理对策 。
补充资料：牙垢
1.附着于牙齿冠部﹑颈部及牙缝等处的污垢。多为食物残渣经唾液作用而成。积久可硬化为牙石。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条