Moreover, the acid will further etch the fracture face and create deeper channels which leads to high fracture conductivity and better treatment effect even under high closure stress.
酸液在裂缝壁面上进一步刻蚀形成较深的沟槽，即使在高的闭合应力条件下，酸蚀裂缝也能保持较高的导流能力，从而改善酸压效果。
Constancy of chemical etch rate method was modified so as to reduce the influencing factors such as temperature and concentration of HF acid. The efficiency and accuracy are improved.
基于差动原理对HF酸恒定化学蚀刻速率法进行改进，以降低环境(温度、HF酸浓度等)变化对测量结果的影响，从而提高测量效率和测量准确性。
When bird droppings fall on the paintwork, the acid begins to burn and etch the paint. The longer the bird droppings remain, the greater the damage.
鸟类粪便落到油漆上时，酸性物质会腐蚀油漆。侵蚀时间越久对油漆的危害越大。
When bird droppings fall on the paintwork, the acid begins to burn and etch the paint. The longer the bird droppings remain, the greater the damage.
鸟类粪便落到油漆上时，酸性物质会腐蚀油漆。侵蚀时间越久对油漆的危害越大。
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