expansivity

• 名词，指扩张、膨胀的性质或状态；在科学语境中常指热膨胀性或可膨胀性，在形容人时指开朗、健谈、善于交际的性格。

A noun referring to the property of expanding in size, scope, or character, often used in scientific contexts to describe thermal expansion or in social contexts to describe a friendly, open, and talkative nature.

不可数

1. Thermal expansion coefficientC1formalscientific

   The fractional change in length, area, or volume of a material per unit change in temperature, measured at a constant pressure.

   热膨胀系数

   • The expansivity of the metal was measured in the lab.
   • Engineers must account for the expansivity of materials in bridge construction.
   • Different alloys have different expansivity values.

   同义词coefficient of expansion

2. Magnificence or tendency to expandC2formal

   A quality characterized by grandeur, scale, or a natural tendency to spread out or enlarge.

   宏伟或扩张倾向

   • The expansivity of the landscape was breathtaking.
   • His ideas had an expansivity that inspired the whole team.
   • The company's expansivity led to rapid growth.

   同义词amplitudebreadthexpansivenessgrandeurmagnificencescope

   反义词compactnessnarrownesssmallness

3. Friendly and talkative natureC2formal

   A personality trait of being open, sociable, and inclined to talk freely with others.

   开朗健谈

   • Her natural expansivity made her the life of the party.
   • His expansivity helped him build strong relationships quickly.
   • The host's expansivity put all the guests at ease.

   同义词affabilityamiabilitycommunicativenesseffusivenessextroversiongregariousnessloquaciousnesssociabilitytalkativeness

   反义词introversionreservereticencetaciturnity