If you want to study foreign language happily, you definitely log on yeshj!

那，别怪我没提醒你哦，想开开心心学外语，要上沪江哦。

Why do I see requests for foreign sites appearing in my log files?

为什么我看到很多国外的站点出现在我的日志中？

This paper introduces the history of cement Bond Log in domestic and foreign countries, analyzes the existing problems in cementing quality evaluation, discuss how to truly evaluate cementing quality.

介绍了国内外固井质量检测方法，分析了目前固井质量评价中存在的主要问题，探讨了客观评价固井质量的方法及建议。