- 【天文學(xué)】蝕既。
下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
second contact中文什么意思
例句與用法
- We must not forget to open the aperture at the second contact .
在食既時(shí)不要忘記放大光圈。 - Second contact with master
第二次接觸 - Second contact surface
第二界面 - Even with the much closer venus , the observations were tricky ; it was crucial to know the exact geographic positions of the observing stations and to accurately time the four “ contacts ” between venus and the sun . ( the first and second contacts occur at ingress , when venus ' s disk touches the sun ' s from first the outside and then the inside ; the third and fourth contacts occur at egress . ) but the potential payoff from the observations would be enormous
即使是距離近得多的金星，這個(gè)測(cè)量也不容易；必須要知道觀測(cè)站確實(shí)的地理位置，且要能準(zhǔn)確測(cè)定凌日時(shí)金星和太陽發(fā)生四次接觸的時(shí)間（第一和第二次接觸發(fā)生在初切，即金星的盤面由外然后再內(nèi)接觸到太陽盤面；第三和第四次接觸發(fā)生于終切） 。