關於umbra的百科

• umbra造句怎麼寫

• 1、lastcontactofumbra2、umbraandpenumbraofsunspot3、afringeregionofpartialshadowaroundanumbra.4、Thisisalighterareabetweentheumbraandtheedgeofashadow.5、Thisincludesthecontinuoussurveyofumbraandpenumbraofthesunspot.6、Partialsolareclipsesoccurwhenthe...
• 2023-12-3015777