These discoveries have raised new questions concerning the origin and distribution of early mammals.
这些发现提出了有关早期哺乳动物的起源与分布的新问题。
Shongliao basin is a rift basin with a strong fault activity and the faults in the basin are closely related to the origin and distribution of natural gas.
松辽盆地是断裂活动十分活跃的裂谷型盆地，盆内断裂与天然气的形成、分布有密切的关系。
Objective: to explore the origin and distribution of nerves in whole esophagus, and provide anatomic data for esophagectomy with vagus nerve reservation adopting minimally invasive operation.
目的：观测全程食管的神经来源与分布特点，为临床行迷走神经保留式食管切除微创术提供解剖学基础。
Variations in the number, origin and distribution of the apical and lower segmental arteries have been described.
顶、下段动脉的数目、起源和分布范围常有变化。
Sediment facies reveal the sediment environment of the interest interval, the origin and distribution rule of the reservoir.
沉积相揭示了目的层段的沉积环境、储集岩成因及其分布规律。
Sediment facies reveal the sediment environment of the interest interval, the origin and distribution rule of the reservoir.
沉积相揭示了目的层段的沉积环境、储集岩成因及其分布规律。
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