“pyromellitic acid”的概念、定义、翻译、参考文献-科学参考

单词	pyromellitic acid
释义	pyromellitic acid [´pī·rō·mǝ`lid·ik `as·ǝd] ^{ORGANIC CHEMISTRY} C₆H₂(COOH)₄ A white powder with a melting point of 257-265°C; used as an intermediate for polyesters and polyamides. Abbreviated PMA.
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