Corolla salverform, tube cylindric, throat narrowed, without scales, lobes overlapping to right.
高脚碟状的花冠，圆筒状的筒部，喉缩小，没有鳞片，裂片对正确地重叠。
This paper proposed a kind of cylindric tube air-suction seed metering device suitable for corn precision seeder, introduced the structure and the principle.
提出了一种适用于玉米精播机的圆管式气吸排种装置，介绍了结构和原理。
Hydrodynamics and desulfurization characteristic were compared for rectangular draft tube spouted bed and rectangular spouted bed and conical-cylindric spouted bed.
对无导流管矩形喷动床与导流管矩形喷动床及柱锥形喷动床的流体力学性能和脱硫性能进行了对比。
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