The fission products are generally dispersed over a large area of the globe unless there is local rainfall resulting in localized fallout.
裂变的产物通常将散布在地球表面一片巨大的区域上，除非因为下雨产生局部核尘降。
The heaviest fallout would be limited to the area at or downwind from the explosion, and 80 percent of the fallout would occur during the first 24 hours.
受尘降物污染最为严重的地区在爆炸点或者爆炸时的下风方向，80%的尘降物会在爆炸后的24小时内产生。
These 85, 000 baby teeth were collected in the late 1950s and early 1960s from children in the st Louis area to study the effects of radioactive fallout in the environment.
这85,000个婴儿的牙齿是在1950年后期和1960年代初期从圣路易斯的孩子们那里采集到的，用来研究一定的环境下放射性坠尘的影响。
In contrast with air bursts, local fallout can be a hazard over a much larger downwind area than that which is affected by blast and thermal radiation.
和空中爆炸相比，受局部核尘降影响的顺风区域要比冲击波和热辐射的影响区域大的多。
These 85,000 baby teeth were collected in the late 1950s and early 1960s from children in the st Louis area to study the effects of radioactive fallout in the environment.
这85,000个婴儿的牙齿是在1950年后期和1960年代初期从圣路易斯的孩子们那里采集到的，用来研究一定的环境下放射性坠尘的影响。
Fallout particulates from ambient air were collected in an leeward residential area of a power plant. Then, were extracted with dichloromethane, concentrated and redisolved in olive oil.
在电厂下风侧居民区内收集大气悬浮微粒，经二氯甲烷提取，浓缩制成受试物，给孕鼠腹腔注射不同剂量，观察对小鼠胚胎及胎仔发育的影响。
Fallout particulates from ambient air were collected in an leeward residential area of a power plant. Then, were extracted with dichloromethane, concentrated and redisolved in olive oil.
在电厂下风侧居民区内收集大气悬浮微粒，经二氯甲烷提取，浓缩制成受试物，给孕鼠腹腔注射不同剂量，观察对小鼠胚胎及胎仔发育的影响。
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