検索内容:
first, initial / one-eyed
This is my first question.
call back, recall
He called me back immediately after he hung up the phone.
an isotope
An isotope refers to elements with the same atomic number but different numbers of neutrons.
(chemistry) rare earth elements
Rare earth elements are essential materials for the manufacture of electronic devices.
a transition element
Transition elements play an important role in chemical reactions.
chemical
This reaction occurs through a chemical process.
a chemist
He is an excellent chemist who made many discoveries.
petrochemistry
He is an expert in petrochemistry.
chemical equation
It's difficult to decipher this chemical equation.
Understanding chemical equations is difficult.
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