【正文】
lly a bending stress is a bination of tensile and pressive stresses. 實際上,彎曲應力是拉應力和壓應力的組合 Most metals have high tensile strength and high pressive strength. However, brittle materials such as cast iron have high pressive strength but only a moderate tensile strength. 大多數金屬 都具有 較高的抗拉強度與抗壓強度,然而,像鑄鐵那樣的 脆性材料 抗壓強度較高,抗拉強度卻只有中等水平。 ?Good luck