It is of great importance to carry on the research of casing wear prevention, prediction and handling technique.
进行套管磨损预防、预测与处理技术的研究具有十分重要的意义。
Prevention Again, wear shades.
预防措施 还是戴上眼睛。
Maintenance efforts focus on corrosion prevention and removal in addition to normal checks for wear and free play.
维护时应当重点关注腐蚀的预防和去除并加强常规检查，防止损伤和自由位移。
So, I for the sake of students' eyes, invented this, electronic cat's eye wear, can let you see tiny words within 10 meters, also can protect the eyes, the prevention of myopia.
所以，我为了同学们的眼睛，发明了这个，电子猫眼戴上去以后，可以让你在十米以内看清楚极小的字，还能保护眼睛，预防近视。
However, the poor mass who had not enough to eat and wear regarded sanitation and plague prevention as wild wishes.
但对广大的贫苦人民来说温饱尚未解决，卫生和防疫不过是一种奢望。
The utility model has the characteristics of beautiful appearance, comfortable foot feeling, wear resistance, skid prevention, aging resistance, wash resistance, fastness, etc.
具有外表美观、脚感舒适、耐磨防滑、耐老化、耐洗涤、不褪色等特点。
The utility model has the characteristics of beautiful appearance, comfortable foot feeling, wear resistance, skid prevention, aging resistance, wash resistance, fastness, etc.
具有外表美观、脚感舒适、耐磨防滑、耐老化、耐洗涤、不褪色等特点。
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