1. 散发：(一)散发 散发(sporadic)是指某病在一定地区的发病率呈历年来一般水平. 一般多用于区、县以上范围,不适于小范围的人群,如一个托儿所、工厂和学校等. 不同病种、不同时期散发水平不同. 确定某病在某地区是否属于散发,应参照当地前3年该病的发病率,
2. 散发性的：致病机转非常复杂,包括许多宿主的生物性和行为性的因素以及诸多感染致病菌的特性.大多数复发性UTI的致病菌与散发性的(sporadic)UTI差不多,因此在治疗上所用的抗生素也相同.有效的预防措施包括:行为上的改变,
3. 零散的：假设生产某种产品的前置时间( lead time )是两星期,但是该产品需求是零散的( sporadic ),该产品每季平均只有一张订单. 目前,这种产品投在生产线的在制品每季只有两周,其它时间不会出现在车间. 然而在精益的情境中,不会有这样的情况,
1. 间断发生的;零星的
Sporadic occurrences of something happen at irregular intervals.
e.g. ...a year of sporadic fighting over northern France...
法国北部发生零星战斗的一年
e.g. The sound of sporadic shooting could still be heard.
仍能听见零星的枪声。
1. Sporadic shooting continued for hours after the morning attacks began, and amid the chaos officials gave varying accounts of casualties and the number of attackers.
2. A hospital said another person was also fatally shot in the violence under similar circumstance, and there was sporadic fighting between protestors and locals in the evening.
3. The cleric stopped short of asking his fighters to surrender their weapons, and sporadic clashes have continued.
4. The provincial meteorological bureau forecast mainly cloudy weather and sporadic showers in Golmud from July 14 to 16.
5. The subway system remained paralyzed, while the two major commuter rail lines limped through Friday with sporadic service.
6. Their conspicuous consumption is one of the major causes of social discontent, which is now fuelling sporadic unrest throughout the country.
7. But he cautioned sporadic cases may come out during the rest of the winter and next spring the peak seasons for the contagion.
8. Widespread economic and political discontent have provoked sporadic protests in north Sudan since January, but the powerful security forces have maintained tight control in the capital.
9. My recent frame of reference is Beijing - an average Western dining landscape that is dotted with a few sporadic success stories.
10. There will still be some sporadic primary elections through June, but they will exert no big impact on the final result.
adj
1. recurring in scattered and irregular or unpredictable instances
e.g. a city subjected to sporadic bombing raids