| 单词 | preactivating |
| 释义 | > as lemmaspreˈactivating preˈactivating n. ΚΠ 1953 Amer. Jrnl. Bot. 40 401/2 Chemical activation was usually performed..by ‘pre-activating’ by shaking with furfural for 30 min. 2003 Carbon 41 2217 The catalyst, prepared by pre-activating in an autoclave, oxidizing with HNO3, loading with CuSO4 and finally calcining at 700 °C. < as lemmas |
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