air leak coefficient 漏风系数
magnetic-flux leak coefficient 磁环漏磁系数
pressure dependent leak off coefficient 与压力有关的滤失系数
leak off coefficient 滤失系数
decline coefficient of leak 漏失衰减系数
Accurate understanding and calculating the total fracturing fluid leak-off coefficient is both key problem to the fracturing design and the important matter to the analysis after fracturing.
准确认识和计算压裂液综合滤失系数，既是压裂施工设计中的一个关键问题，也是压后分析评估的一个核心内容。
Through the examination experiment on three tube pieces' crack part, the relation of crack width, the maximum of leak magnetic field and differential coefficient is found out.
通过对三个管件的裂纹部位的检测实验，找出裂纹宽度与漏磁场的最大值和变化梯度之间的关系。
The building's outer Windows with a large heat transfer coefficient and a poor leak tightness are the key positions, where energy is consumed.
建筑外窗的传热系数大，气密性差，是建筑能耗的重点部位。
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