Strong compaction is the most typical diagenesis as well as the principal factor of reducing porosity.

压实作用强烈是北山地区侏罗系煤系砂岩最具特色的成岩现象,也是使孔隙减少的最主要因素.

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Thus cell kinetics alteration is the principal factor that influences the effect of radiotherapy.

因此,细胞动力学改变是影响放射治疗效果的重要因素.

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Art market is a principal factor which influences the development direction of art.

艺术市场是影响艺术发展方向的重要因素.

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