amu
amu — 縮寫
1. the abbreviation for atomic mass unit, a very small unit scientists use for the
原子質量單位
表示原子或分子質量的單位
the abbreviation for atomic mass unit, a very small unit scientists use for the mass of atoms and molecules.
Kemi wrote sixteen amu beside the oxygen atom during chemistry class.
Kemi 在化學課上在氧原子旁寫下 16 amu。
write a mass value in amu
The chart showed helium at four amu and neon at twenty.
圖表把氦列為 4 amu，氖列為 20 amu。
compare atomic masses in amu
Samir checked whether the ion was slightly under twenty-four amu.
Samir 檢查那個離子是否略低於 24 amu。
Our teacher explained that one proton weighs about one amu.
老師解釋說，一個質子的重量大約是一個原子質量單位。
The museum label listed uranium near two hundred thirty-eight amu.
博物館標籤把鈾標成接近 238 amu。
文法句型
16 amu
mass in amu
weigh about one amu
用法筆記
Usually written after a number when scientists compare the mass of atoms, ions, or molecules. Many modern science texts may also use u or dalton for nearly the same unit.