dīng qíng xiàng jiāo
- NBR(nitrile rubber buna)
- Buna-N rubber
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相似单词
丁间醇醛,
丁腈橡胶,
丁卡因,
丁纳橡胶,
丁内酯,
丁晴橡胶,
丁酸,
丁酸盐,
丁酸酯,
丁酮,