thorium a 中文意思是什麼

thorium a 解釋
釷a
  • thorium : n. 【化學】釷。
  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時，冠以不定冠詞主要表示類...
  1. Thorium tungsten electrode is the most commonly used tungsten in america and some other countries and is a good general use tungsten. especially, it performs well when overloaded with extra amperage

    釷鎢電極使用很普遍，釷元素雖具有低輻射性，但它相對純鎢來說，已經體現出重要的改進性能。
  2. But an unexpected fact was noted : certain minerals ( pitchblende, chalcolite, autunite ) had a greater activity than might be expected on the basis of their uranium or thorium content

    但是一個意外的事實引起了我的注意：某些礦物質（瀝青鈾礦物質、銅鈾雲母或鈣鈾雲母）的活性比根據其鈾或針含量所判斷的要高。
  3. They recognized that in a thorium province pb208 would present complications.

    他們承認，含釷區內的Pb208會產生干擾。
  4. Their discovery marks the first abundance determination of the actinides element thorium in a star beyond the milky way, and follows the detection of thorium in more than ten stars within the milky way

    他們發現，標志著首豐測定的錒系元素釷星以外的銀河系，跟檢測釷十余恆星的銀河系
  5. A few elements, among them uranium and thorium, spontaneously disintegrate into lighter elements by chances.

    少數元素，其中有鈾和釷，通過它們核的變化自然蛻變成較輕的元素。
  6. The decrease of the flux shown by the arrow indicates the absorption of light by thorium ions at the surface of the star ; i. e., the stronger feature means a higher abundance of thorium

    下降的通量顯示箭頭表明對光的吸收釷離子表面該星;即較強的特點，手段更高豐富的釷
  7. Cerium - tungsten electrode, a new type of non - radiate electrode material invented in china, can not only replace the thorium - tungsten electrode in the case of low direct current and mini - scaled welding but also bears superior features over the latter

    鈰鎢電極是我國研製發明的新型無放射性的電極材料，在低電流直流條件下和小規格焊接可取代釷鎢電極，並且有更優越的性能。
  8. They recognized that in a thorium province pb208 would present complications

    他們承認，含釷區內的pb208會產生干擾。
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