umbra

n.

本影，暗影，蚀时的地球；

复数：umbrasumbrae

1. 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。
2. It is the custom that aged or infirm Striders make a final journey into the Umbra, never to return.
   年老或者衰弱的漫游者会根据传统最后一次出发去影界，一去不归。
3. This is a lighter area between the umbra and the edge of a shadow.
   这是本影和阴影边缘之间较亮的区域。
4. Shaped like a cone extending into space, the umbra has a circular cross section that can be most easily seen during a lunar eclipse.
   本影就像一个圆锥一样延伸在空间中，当月食发生时，它很容易被看到。

Umbra: efficient and scalable memory shadowing
Magneto-convection in a sunspot umbra
Ecology of the arboreal tropidurid lizard Tropidurus (=Plica) umbra in the Amazon region
The interaction of electrons in the optical umbra of Venus with the planetary atmosphere - The origin of the nighttime ionosphere
Cytogenetic effects on the eastern mudminnow, Umbra pygmaea , exposed to ethyl methanesulfonate, benzo[ a ]pyrene, and river water
Infrared lines as probes of solar magnetic features. XI. Structure of a sunspot umbra with a light bridge.
Can Seismic Waves Be Trapped inside an Inactive Fault Zone? The Case Study of Nocera Umbra, Central Italy
Survival mechanisms of the central mudminnow ( Umbra limi ), fathead minnow ( Pimephales promelas ) and brook stickleback ( Culaea i...
Induction of micronuclei and nuclear abnormalities in the erythrocytes of mudminnows ( Umbra limi ) and brown bullheads ( Ictalurus ...
Induction of nuclear anomalies (micronuclei) in the peripheral blood erythrocytes of the eastern mudminnow Umbra pygmaea by ethyl m...