"Material character" is a term that refers to the physical properties of a substance, such as its density, melting point, and chemical reactivity. It is derived from the Latin word "materia," which means "matter" or "substance," and the Greek word "charaktēr," which means "mark" or "distinctive feature."

Here are some examples of sentences using the phrase "material character" in Engpsh:

"The material character of steel makes it ideal for use in construction and manufacturing." (钢的物质性格使它适用于建筑和制造业。)
"The material character of a substance can be determined by its chemical structure and bonding." (物质的物质性格可以通过其化学结构和键合来确定。)
"Changes in temperature can affect the material character of certain substances." (温度的变化可能会影响某些物质的物质性格。)