The inner geology structure of the coal mine is complicated, and small breaks occur here and there, which has great influence on coal production.
井田内地质构造复杂，小断层发育，对煤矿生产有较大的影响。
Various types of the main affecting factors in reservoir, complicated structure and difference of understanding degree of geology are drilling horizontal well in Tuha oilfield.
吐哈油田油藏类型多、构造复杂，地质认识程度差异是油田水平井成败的最主要影响因素。
Fourier finite difference operator can be adopted to ensure good fidelity of seismic wave field in wave field continuation of complicated geology structure, bringing high quality image.
利用傅里叶有限差分算子可保证在复杂构造的波场延拓中，地震波场不失真，成像质量高。此外，本文对傅里叶有限差分算子作了必要的优化。
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