1) It hailed during the night.
夜间下了冰雹。
2) It hailed last night.
昨夜下雹子了。
3) It's hailing.
正在下冰雹。
4) hail
[英][heɪl] [美][hel]
v./n.欢呼;(下)冰雹
5) It hailed the other day.
几天前下了雹。
6) Hailstone
[英]['heɪlstəʊn] [美]['hel'ston]
冰雹
1.
Aerocraft is easy to impact with hailstone and may cause serious damages during its flight,so it′s necessary to investigate hail impact on aerocraft by trial system.
航空飞行器在飞行过程中容易和冰雹粒子发生碰撞,并由此造成撞击损伤。
2.
The methods of speedup are proposed under the limitation of the strength of hailstone pill.
运用简单波、冲击波理论,通过对气体炮打开后气体在发射管内的运动分析,给出作用在弹丸底部气体压力的最大值,根据冰雹弹丸的物理特性,提出进一步提高气体炮发射冰雹速度的方法。
3.
The hailstone impacting test system is constructed basing on the theory of air gun which energy is offered by compressed air.
冰雹撞击试验系统是以压缩空气为动力的空气炮原理构建的,在设计时系统参数选择决定了试验的成功与否,同样在试验阶段时也需要根据技术要求选择各参数。
补充资料：夜间
1.夜里。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条