【正文】
lly a bending stress is a bination of tensile and pressive stresses. 實(shí)際上,彎曲應(yīng)力是拉應(yīng)力和壓應(yīng)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(shù)金屬 都具有 較高的抗拉強(qiáng)度與抗壓強(qiáng)度,然而,像鑄鐵那樣的 脆性材料 抗壓強(qiáng)度較高,抗拉強(qiáng)度卻只有中等水平。 ?Good luck