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| Chinese | English |
| 二侧相等的 | isobilateral (isobilateralis) |
| 二倍相 | diploid phase |
| 二因子相互作用 | two-factor interaction |
| 二相世代交替 | diphasic alternation of generation |
| 二相的 | quarter phase |
| 二维相关光谱学 | two-dimensional correlated spectroscopy |
| 二进制相移键控 | binary phase-shift keying |
| 相等二歧分枝 | isotomic dichotomy (dichotomia isotomica) |