eutecticum

例句：

1. 1.The eutectic composition of the alloy is critical for its performance.
   合金的共晶成分对其性能至关重要。
2. 2.The study of eutectic metals has led to significant advancements in materials science.
   对共晶金属的研究在材料科学领域取得了重大进展。
3. 3. The eutectic temperature is a critical factor in determining the melting behavior of the alloy.
   共晶温度是决定合金熔化行为的关键因素。