急求機械類英文翻譯

MECHANICAL PROPERTIES OF METALS
金屬的機械性能

Mechanical properties are the characteristic responses of a material to applied forces. These properties fall into five broad categories: strength, hardness, elasticity, ductility, and toughness.
金屬的機械性能是金屬受到外力作用時所表現出來的特征。這些性能主要分為五類：強度，硬度，彈性，塑性，韌性。

Strength is the ability of a metal to resist applied forces.
強度是金屬承受外加力的能力。

Strength properties are commonly referred to as tensile strength, bending strength, compressive strength, torsional strength, shear strength and fatigue strength.
強度性能一般涉及到抗張強度，彎曲強度，耐壓強度，抗扭強度，切變強度和疲勞強度。

Tensile strength is that property which resists forces acting to pull the metal apart. It is one of the most important factors in the evaluation of a metal.
抗張強度是金屬抵抗被分離的能力（性能）。是評價金屬的重要因素之一。

Compressive strength is the ability of a material to resist being crushed. Compression is the opposite of tension with respect to the direction of the applied load. Most metals have high tensile strength and high compressive strength. However, brittle materials such as cast iron have high compressive strength but only a moderate tensile strength.
耐壓強度是金屬抵抗被壓碎的能力（性能）。壓力是張力的反方向外加負載。大部分金屬具有較高的抗張強度和較高的耐壓強度。但是，像鑄鐵這種脆金屬雖有較高的耐壓強度，卻只有較中等的抗張強度。

Bending strength is that quality which resists forces from causing a member to bend or deflect in the direction in which the load is applied. Actually a bending stress is a combination of tensile and compressive stresses.
彎曲強度是金屬抵抗所受負載方向的彎曲和傾斜的能力（性能）。實際上彎曲應力是壓力和張力的綜合。

Torsional strength is the ability of a metal to withstand forces that cause a member to twist.
抗扭強度是金屬抵抗被扭轉的能力（性能）