“tough pitch copper”的概念、定义、翻译、参考文献-科学参考

单词	tough pitch copper
释义	tough pitch copper [`tǝf `pich ´käp·ǝr] ^METALLURGY Copper refined in a reverberatory furnace to adjust the oxygen content to 0.2-0.5%.
随便看	tree frog tree line tree pruning tree-ring hydrology trefoil trellis drainage Trematoda trematodiasis Trematosauria trembling ill Tremellales tremie tremolite tremor trench trench duct trencher trench excavator trench fever trenching machine trench mouth trench sampling trench shield trend trennschaukel apparatus

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