permanent specimen
permanent specimen是什么意思、permanent specimen怎么读
permanent specimen 基本解释
网络 永久标本; 持久标本
重点词汇
permanent specimen 双语例句
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The results show that mechanical properties of semi-solid specimens are higher than the liquid casting in permanent mold, except for the tensile strength of the semi-solid specimen corresponding to the integrated slurry making process.
研究了液态和半固态金属型浇注试样的组织和力学性能,结果表明,半固态金属型试样的力学性能高于液态金属型(除复合制浆方法所得半固态试样的抗拉强度低于液态金属型外)。

