Formation mechanism of sticking breakout and basic principle of molten steel leakage prediction system are explained.

阐述了粘结漏钢的形成机理和漏钢预报系统的基本原理。

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The measuring method of four-arm diameter log, data processing and the principle of identification of breakout are discussed, and then two different kinds of examples are given.

讨论了地层倾角和四臂井径测井的测量方法、资料处理以及识别崩落椭圆的原则，并列举出两个不同类型的实测例子。

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