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- 2023-12-05 22:54ALKALINE EARTH-BASED ALKOXYLATION CATALYSTS.
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- 2023-12-05 22:45METAL HALIDE LAMP AND LIGHTING SYSTEM
- 2023-12-05 22:44一种触电/压电材料的制备方法及其应用
- 2023-12-05 22:44一种用于线缆的非卤阻燃性树脂材料
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- 2023-12-05 22:25Method of providing a low cost semiconductor transmitter photonic integrated circuit (TxPIC) chip
- 2023-12-05 22:18一种稀土抛光粉精细研磨装置
