... PER-DELAY : 预延迟也叫初延迟 (声音最初反射声的时间 这个参数的大小影响环境位置的变化和边界感的变化 ) DECAY TIME : 衰变时间 ,衰减时间 ENVELOPE : 轨道线 (机械或其它设备的性能范围) ...
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因为它们有着与光速非常接近的速度,所以它们的衰变时间是实验室里静止的介子衰变时间的30倍。
Because they had a speed close to that of light, they took thirty times longer to disintegrate than muons that just sit still in the laboratory.
然而,大约在同一时间,科学家们意识到彗星可能含有衰变的放射性同位素,这些同位素可能使彗星内部的温度升高到导致内部进化的温度。
About the same time, though, scientists realized comets might contain decaying radioactive isotopes that could have warmed cometary interiors to temperatures that caused the interiors to evolve.
这么大的原子核不可能是稳定的,但在足够长的时间内,在真空附近组装一个原子核以观察真空的衰变是可能的。
A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum.
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