1.
RESEARCH AND APPLICATION OF LONG-TERM SCALE REMOVAL AND PREVENTION PROCESS IN LONGDONG OILFIELD
陇东油田长效清防垢工艺研究与应用
2.
Technology Study on Removal/Inhibition Scale in Alkalescent Alkaline/Surfactant/Polymer Flooding of Daqing Oilfield
大庆油田弱碱三元复合驱清防垢技术研究
3.
For a leather surface, wipe it uni-directionally while cleaning to avoid repeated dhesion of dirt.
对皮革表面，清洁时应单方向擦拭，以防污垢返粘。
4.
Corrosion and inhibiting techniques of gas heating furnace Ⅰ.Cleaning and passivation
天然气加热炉腐蚀防垢技术研究 Ⅰ.清洗与钝化
5.
The cooling system should be cleaned at periodic intervals to prevent the accumulation of excessive rusts and scale.
冷却系应定期进行清洗,以防锈蚀和水垢过量沉积,
6.
Research on Anti-Corrosion and Anti-Encrustation Process for Oil and Water Well Drill Rod;
油水井筒腐蚀结垢及防垢除垢工艺研究
7.
metal cleaning for rust prevention(chemical cleaning of steel products)
防锈用金属除垢方法（铁德化学除垢法）
8.
Research on the scaling reasons and prevention of Wangxin 25 well;
王新25井结垢原因分析及防垢研究
9.
Glister Toothpaste offers multifunction performance to clean safely, remove plaque, fight cavities, whiten teeth and freshen breath all in one go!
一次过达到清洁牙齿、去除牙垢、预防蛀牙、洁白牙齿和保持口气清新等全部功能。
10.
Mother was in the garage, brushing the dirt aside
母亲在车库里清扫污垢。
11.
prevention of scale in boilers
防止锅炉内水垢的产生
12.
Even firmly adhered stains can be removed readily; preventing whites yellowing; easily be rinsed; save water, time and labour.
本品对顽固的污垢具强有力的脱除力,可防白色织物泛黄,容易漂清,省水、省时、省力。
13.
CaCO_3 Scaling and Scales Removal in Gas Well at T_3X_2 Gas Reservoir of Hexingchang,West Sichuan
川西合兴场须二气藏气井CaCO_3结垢及清垢技术
14.
Research on Mechanism and Efficiency Improving Methods in Ultrasonic Scale Cleaning;
超声波防垢除垢机理及提高效率的方法研究
15.
Scaling Reasons and Prevention Measures of Heat Exchanger at the Top of Atmospheric Column
常顶换热器结垢原因分析及防结垢对策
16.
Application of ultrasonic assist on carry oil pipeline removal and prevention of dirt
超声波辅助法在输油管道除垢、防垢中的应用
17.
Study of New Boilor Corrosion and Scale Inhibitor and Its Application;
环保节能型锅炉防腐缓蚀防垢除垢剂的研制及应用前景
18.
Experimental Research on the Antiscale and Scale-removal by Ultrasonic Cavitation and Antiscale and Scale-removal and Enhancing Heat Transfer by Hydrodynamic Cavitation
超声空化防除垢与水力空化防除垢和强化传热实验研究