Noun:

1. a strong upward air current

UPCA乌泊加猪upadv.向上；起来；上升；往上prep.向上adj.向上的；上行的n.上升v.上升；增加Up Arrow Elevator Trim Positive升降舵向上配平up-drawing continuous casting铜管upconversion luminescence agent上转光剂up against a strong opponent.面对一名强劲的对手Updating of standard land value基准地价更新upgrading of industry structure工业结构升级upwind difference approximation迎风差分逼近upported sulfuric acid catalyst负载硫酸催化剂upflow anaerobic sludge blanket上流式厌氧污泥床UPTS Universal Packet Time Slot通用分组时隙

1. Peak updraft strength is slightly enhanced with hodograph curvature.
   山顶上升气流强度随速矢端迹曲率加大而稍有加强。
2. Finally, the mechanism for the effect of the updraft restraint of the hailstorm on micro-physical processes is analyzed.
   最后，文中还分析了人工抑制上升气流影响云中冰雹形成的微物理机制。