mass number

同根派生

• mass number相關(guān)詞

英漢例句

• Chemical element is the general term for the same type of atoms with the same mass number.
  化學(xué)元素是具有相同核電荷數(shù)的同一類(lèi)原子的總稱(chēng)。
• Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time.
  同質(zhì)異能素兩種或更多種具有相同的質(zhì)子數(shù)和原子數(shù)，但有不同的輻射特性并能在幾種能量狀態(tài)中的任一種里存在一段可測(cè)量時(shí)間的原子核中
• A cloud is a mass of vapor in the sky.
  云是天空中的水汽團(tuán)。
• The mass rally was a total fiasco.
  那次群眾集會(huì)徹底失敗。
• He thumbed through the directory to look for her number.
  他翻閱電話號(hào)碼簿找尋她的號(hào)碼。

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