In total heat of radiator, convection heat radiation accounts for about 61%, and radiant heat is about 39%.
实验散热器总放热量中，热对流放热量约占61%，辐射放热量约占39%。
It is difficult to study the contribution of each sound radiator to total cutting noise in a cutting system by means of traditional theoretical or experimental methods.
用传统的理论或实验方法研究切削过程中各个声辐射体对总体切削噪声的贡献比较困难和繁杂。
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