penumbra怎么读，penumbra的音标和真人发音
英音
[pəˈnʌmbrə]
美音 [pɪˈnʌmbrə]
音节划分：pen-um-bra
penumbra是什么意思，penumbra的意思是
n.黑影周围的半阴影；半影；边缘；外围
penumbra 记忆方法
penumbra的词根或词缀是:
umbr
所属分类:
GRE
星级词汇:
penumbra的词源和记忆技巧
penumbra 半影
来自拉丁语paene,几乎，接近，umbra,阴影，全影，词源同umbrella.
penumbra 的用法和双语例句“点击”或“选中”例句中的单词，就可以看到词义解释
- With a magnitude of 0.92 ( 92 percent of the lunar disk will enter the penumbra ) , it should be possible to detect some very slight reduction in the overall brightness of the full moon during maximum eclipse .
- 由于有0.92的数量（92%的月盘会进入半阴带），所以在这次月蚀处于最大状态时，应该可以检测到月偏食时，满月整体亮度的一些轻微降低。
- Conclusion : there is great individual difference lies in the relationship between time onset of ischemic stroke and the corresponding penumbra .
- 结论：急性缺血性脑血管病发生时间与缺血半暗带之间对应关系存在个体差异。
- The trick for observers is to see if you can visually detect a difference in the brightness of the moon when it 's entered the penumbra .
- 观看月偏食的技巧在于当月亮进入其半阴带时，你能否真正地能检测到月亮的亮度变化。
- What spectacle confronted them when they , first the host , then the guest , emerged silently , doubly dark , from obscurity by a passage from the rere of the house into the penumbra of the garden ?
- 当主人领先，客人随后，两个黑的身姿默默地穿过房后昏暗的雨道，步入半明半暗的庭园中时，他们面对的是什么样的景物？
- The photo montage at top shows the full moon on august 6 , 2009 , just before its entry into the penumbra ( pre-p1 ) ; the full moon at its maximum penumbral position ( max ) ; the difference between these two images ( diff1 ) .
- 上面图像中上部的拼集照片表示了于2009年8月6日，当月亮刚好要进入其半阴带之前的满月（pre-p1）、月亮进入最大半阴带时的满月（max）；以及这两幅照片的差异（diff1）。
- Fortunately , at my location near athens , greece , I enjoyed pristine transparency ( ideal viewing conditions ) for this eclipse , where 40 percent of the lunar disk entered the penumbra .
- 幸运的是，当时我的拍摄场地靠近于希腊的雅典，在那里月盘大概有40%进入了半影带，才使我欣赏到这次月食的原始透明度（理想的观察条件）。
- Conclusion hsp70 was sensitive marker of ischemic damage , the anatomic distribution of hsp70 expression could be thought as ischemic penumbra .
- 结论hsp70是缺血神经元损伤的敏感指标，缺血皮层区hsp70表达的解剖分布可能相当于半影区。
- However , as the entire moon will cross the penumbra partial shadow of the earth , it will appear significantly dimmer around the time of partial eclipse .
- 但由于整个月球会经过地球的半影，在接近月偏食时，月球会明显较暗。