本文讨论了放射环模型和多级螺旋模型。
Based on these observations, the radial loop model and the multiple coiling model are discussed.
本实用新型涉及一种单端多级迷宫螺旋泵，属于通用工程设备技术领域。
The utility model relates to a single end multistage labyrinth screw pump, belonging to the technical field of universal engineering equipment.
观察到BK染色体具有多级双股螺旋结构。
The results showed that BK chromosomes reveal a multiple double strand helical structure.
观察到BK染色体具有多级双股螺旋结构。
The results showed that BK chromosomes reveal a multiple double strand helical structure.
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