At this stage, the tooth can repair the weakened area with the help of fluoride and minerals in saliva.
在这个阶段，牙齿可以借助唾液中的氟化物和矿物质修复脆弱的部位。
Application results indicate that the tool is safe, reliable and easy to operate and can effectively prolong well's life and reduce casing repair, casing patching or well workover in later stage.
现场应用效果表明，工具安全可靠、操作方便，能有效延长油井寿命，减少后期的修套、补套或修井工作。
Objective: To observe clinical results of composite tissue flap transplantation in one-stage repair of serious hand injury and evaluate the functioning of the hand reconstructed.
目的：总结应用组合组织瓣移植一期修复手部毁损伤及重建部分手功能的临床疗效。
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