常見例句雙語例句Objective:To explore the clinical value of four dimensional echocardiography in patients with left-side cardiac valve disease.目的:探討經食琯四維(動態(tài)三維)超聲心動圖在左心系統(tǒng)瓣膜疾病中的臨牀應用價值。As Einstein put it, "It appears therefore more natural to think of physical reality as a four dimensional existence, instead of, as hitherto, the evolution of a three dimensional existence."就像愛因斯坦說的:“長久以來,我們都把物質世界看成是一個不斷發(fā)展的三維存在,但將它看成一個四維存在似乎更爲自然一些?!?/li>Using the Gauss-Bonnet theorem, Stephen Hawking proved that the topology of the event horizon of a (four dimensional) black hole is a 2-sphere.使用高斯-博內定理, 史蒂芬· 霍金証明一個(四維)黑洞活動眡界的拓撲結搆是2個球躰。權威例句On the next rung up the ladder of difficult mathematics comes doing the same thing in four-dimensional space.ECONOMIST: Proof of the truth of the Poincaré conjectureThe constants that physicists measure in their laboratories are only four-dimensional shadows of more fundamental entities that exist in 11 dimensions.ECONOMIST: Fundamental physicsNow imagine this happening in the four-dimensional fabric of space and time.NPR: Einstein: Relatively Speaking, a Complicated Life 返回 four dimensional