英语翻译.metals with a high coefficient of thermal expansion e.g.aluminium and copper,expand and contract more for a given heat input than those with a low expansion coefficient,thus creating difficulties in counteracting distortion
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英语翻译.metals with a high coefficient of thermal expansion e.g.aluminium and copper,expand and contract more for a given heat input than those with a low expansion coefficient,thus creating difficulties in counteracting distortion
英语翻译
.metals with a high coefficient of thermal expansion e.g.aluminium and copper,expand and contract more for a given heat input than those with a low expansion coefficient,thus creating difficulties in counteracting distortion
英语翻译.metals with a high coefficient of thermal expansion e.g.aluminium and copper,expand and contract more for a given heat input than those with a low expansion coefficient,thus creating difficulties in counteracting distortion
像铝和铜膨胀系数高的金属,在相同的加热温度下,它们的膨胀和收缩程度要比膨胀系数低的金属大,因此,也更难控制它们的变形,