occurrence n. 1.(事件的)发生,出现,有;【矿物】存象,(矿床等的)埋藏;产地。 2.遭遇,事件,事故。 daily occurrences 日常发生的事。 oscillatory occurrence 振荡现象。 be of frequent [rare] occurrence 是常[少]有的。 make allowance for unfavourable occurrences 留有余地,以防意外。
The occurrence time the draconids maxima is as follows 这次天座流星雨的极大期时间如下:
The occurrence time the perseids maxima is as follows 这次英仙座流星雨的极大期时间如下:
But the whole progress of the research is still behind the prediction of the occurrence time 但其总的研究进展仍远远落后于发生期的预测。
Treat dose directly affect the injury symptom type , occurrence time , injury degree , spots distribution , spots spread and color transformation 处理剂量的高低对伤害症状类型、出现的早晚、伤害程度、伤斑分布、伤斑扩展和色泽变化等均有直接影响。
The anomaly of greenland sea - ice area can affect sand - storm ' s occurrence times in ningxia ( north of china ) in later through affecting air circulation backgrounds 格陵兰海冰面积的异常变化通过影响后期的大气环流,从而影响于夏(我国北方)沙尘暴的发生。
4 . the global temperature increase is one of the possible reasons for the total decrease trend of sand - storm ' s occurrence times in ningxia ( north of china ) 4 、宁夏(我国北方)沙尘暴发生次数在环境总体恶化的情况下反而呈下降趋势,可能是全球气候变暖所致。
Result is as follows : in the middle of october , the primordium of ovulate strobilus occurred , its occurrence time varied between different - aged ramets and different occurrence part 结果表明:雌球果原基发生时间为10月中旬,不同的树龄和着生部位,其发生时间不同。
In this paper , we consider a sparre andersen risk model with geometric distribution of claim inter - occurrence times . the claim size distribution can be a general discrete distribution 本文研究了索赔到达间隔服从几何分布、索赔额分布为一般离散分布的sparreandersen风险模型。
3 . the correlations are significant between sea - ice area index of kara barents and greenland seas , which locate on the north of the continent of europe and asian , and spring sand - storm ' s occurrence times in ningxia 3 、宁夏春季沙尘暴发生次数与欧亚大陆北部的喀拉海、巴伦支海、格陵兰海冰面积指数之间有显著的相关关系。