现有的大倾角厚煤层开采技术存在着一系列问题，从而导致煤矿回采率低，安全性差，成本高。
There are series problems exist in the existing thick seam mining technology with large dip Angle, thus cause low extraction rate, poor safety and high cost.
泥浆侵入带的存在除了造成双侧向曲线明显的正幅度差外，还使裂缝倾角和夹角的影响变模糊。
The existence of mud invasion leads to positive difference on dual laterolog, and makes the effect of dip and angle vaguer.
它可以精确到偏心率和倾角差的一阶项，而且不再包括长期误差。
The solution is accurate to first order in the eccentricity and inclination difference and including no long term errors.
用有限差分法进行波场全倾角归位的关键在于波场的延拓方向。
The key to all-dip wave field migration using finite-difference method lies in the continuation direction of wave field.
该方法克服了小倾角差分偏移的各种困难，实现了快速、准确的地震资料偏移的高分辨率处理以及地震波传播的数值模拟。
This method solves the shortcomings of small dip difference migration and realizes rapid and accurate high resolution process of seismic data m…
该方法克服了小倾角差分偏移的各种困难，实现了快速、准确的地震资料偏移的高分辨率处理以及地震波传播的数值模拟。
This method solves the shortcomings of small dip difference migration and realizes rapid and accurate high resolution process of seismic data m…
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