通过凝胶电泳,呈现出分子迁移图形, 形成彗星拖尾(comet tail)现象,即完整DNA的细胞染色体为“头”,而松散和断裂的DNA为“尾”,以 此评价DNA损伤程度。
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comet tail sign 彗尾征 ; 彗星尾征
Comet-tail 彗星尾
comet-tail artifact 彗星尾征
comet-tail echo 慧星尾样回声
comet-tail system 彗尾带系
type-i comet tail i型彗尾
Color comet tail sign 彩色多普勒慧尾征
Holding in the palm cool cool, it soon melted, as if the night of the meteor, holding a beautiful comet tail and disappeared in the distant galaxy.
捧在掌心凉爽爽,旋即便融化了,仿佛夜晚的流星,托着美丽的慧尾,消失在遥远的银河。
Seen here on June 13th from southern New Mexico, this Comet McNaught's long ion tail sweeps across the telescopic field of view (a negative image is inset).
这是6月13日新墨西哥南部所见,麦克·诺特的长离子尾扫过望远镜的视野,插图是负片。
An alien planet orbits so close to its star that its atmosphere is being blasted away, forming a gaseous, comet-like tail, astronomers announced Thursday.
天文学家周四称:一个外太空的行星,它的轨道太接近它的太阳,于是行星的大气层正在爆掉,形成了一个气态的、彗星一样的尾巴。
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