a rare silvery (usually trivalent) metallic element; brittle at low temperatures but liquid above room temperature; occurs in trace amounts in bauxite and zinc ores
造句
用作名詞(n.)
Indium,boron and gallium are used in making solar cells. 銦，鎵，硼，應用到太陽能電池中。
There is much gallium and germanium in zinc-leaching residues. 鋅浸渣中含有數量可觀的鎵鍺。