thorium a 中文意思是什麼
thorium a
解釋
釷a-
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。 -
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。 -
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。 -
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 -
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。 -
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 -
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。 -
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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