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| 位阻［现象］ | |||
| 位阻现象; 位置障碍 | |||
| 空间位阻; 位致障碍; 位阻现象 | |||
| ［inhibition］位阻现象 | |||
| 位阻; 空间障碍 | |||
| 立体阻碍; 位阻 (现象) | |||
| steric hindrance: 1 phrase in 1 subject |
| Chemistry | 1 |
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