penumbra meaning in English
n.
(pl. -brae , penumbras)
1.【物理学】半影，黑影周围的半阴影。
2.(绘画中)画面浓淡相交处。
3.【天文学】太阳黑子周围的半暗部；(星面部的)阴影。
adj.
-bral
Examples
- This includes the continuous survey of umbra and penumbra of the sunspot .
这包括对太阳黑子本影和半影持续的观测。 - His fellow workers called him el penumbra . " the shadow .
他的朋友们管他叫"影子. - " moon leaves penumbra " - when the moons leaves the penumbra
月球离开半影时，称为半影食终 - Expression of aquaporin - 4 in ischemic penumbra tissues
缺血半暗带组织中水通道蛋白4表达的初步研究 - Destruction : the staff must be thrown into the star at penumbra ' s hub
摧毁：必须将该杖扔进恒星的半影中心。