通过对鄂尔多斯盆地上古生界煤热解动力学实验研究与数据模拟，证明鄂尔多斯盆地上古生界天然气主要来源于上古生界煤的长期裂解累积；
The modeling results based on pyrolysis experiments of Upper Paleozoic coal showed that gases in Upper Paleozoic reservoir are derived from those coals with a long time cracking history.
天然、纯净的自然界花草萃取，尽量避免使用对肌肤可能造成负担的原料。
Natural, pure natural herbal extracts, as far as possible avoid the use of a burden on the skin may be raw materials.
岩石作为天然的建筑材料，通常承受着自然界的风化作用，因此，研究风化对岩石物理力学特性的影响是十分必要的。
As a kind of natural building material, rock usually is influenced by weathering. Therefore, it is necessary to research the influence of weathering on rock physical and mechanical characteristics.
岩石作为天然的建筑材料，通常承受着自然界的风化作用，因此，研究风化对岩石物理力学特性的影响是十分必要的。
As a kind of natural building material, rock usually is influenced by weathering. Therefore, it is necessary to research the influence of weathering on rock physical and mechanical characteristics.
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