双碳的英文缩写为Double carbon。
双语例句：
1、双碳源单细胞蛋白高密度培养
High Cell Density Cultivation of SCP with Double Carbon Sources
2、结果表明：用0.9%几丁质和3.0%葡萄糖作为双碳源时几丁质酶的产量最高达0.192U/mL，高于单独使用葡萄糖或几丁质作为碳源时的最高产量
The results indicated that the highest activity of chitinase was 0.192 U/ mL using 0.9% chitin and 3.0% glucose as double carbons source in the medium， which was higher than those using chitin or glucose as the sole carbon source.
