单词:heliostat
[医] 定日镜
by which a sunbeam is made apparently stationary, by being steadily
directed to one spot during the whole of its diurnal period; also, a
geodetic heliotrope.
单词:heliostat 相关文章
01Going Out of Business GLOSSARY to gobelly up to fail as a business; to have to close because a business is not earning enough money* The farm went belly up when it didnt rain enough for two summers in a row. to struggle to try very hard or for a ve
By Nico Colombant World Health Organization officials say the northern Nigerian state of Kano will start a catch-up polio immunization campaign Saturday, ending an 11-month religious-led boycott. The
Are You Progressing with Progressive Tenses? Editors note: This is the second of a four-part series on verb tenses. Click here to see part one. For VOA Learning English, this is Everyday Grammar. Today we are going to look at the progressive verb ten
By Deborah Block Washington, DC 23 May 2006 watch New Sunscreen report Sunscreen with helioplex A new ingredient in sunscreen is being called the most important advance in skin protection from the sun
For Bill Campbell, it was particularly tough. He was fond of Jobs and didn't particularly like Sculley. 对于比尔坎贝尔来说,这个抉择尤为艰难。他很欣赏乔布斯,但并不是特别欣赏斯卡利。 His voice quavered a bit as
Julianne: Im really glad to be back in Macville. What happened to the market that used to be here? Helio: Oh, it went belly up . It struggled for many years. The owners tried to downsize and reduced the space they were renting, but they had to throw