preparation n. 1.準(zhǔn)備,預(yù)備;〔常 pl.〕準(zhǔn)備工作[措施];預(yù)修,預(yù)習(xí) (for) 預(yù)習(xí)時間;(對…的)準(zhǔn)備。 2.(藥、菜等的)配制,備辦;制劑,配制品;配制好的食物。 3.【音樂】準(zhǔn)備調(diào)(音)。 4.(進(jìn)行解剖、病理等實驗的)標(biāo)本。 5.節(jié)日的前夜。 The preparations are complete. 準(zhǔn)備妥當(dāng)了。 preparation of gunpowder 火藥的配制。 preparation of soil 整地。 be in preparation 在準(zhǔn)備中;在編輯中 (The dictionary is in preparation. 這部字典在編輯中)。 in preparation for 作為…的準(zhǔn)備。 make preparations against 為對付…作準(zhǔn)備。 make preparations for 為…作準(zhǔn)備。
As we know the excellent performance of sodium ion battery depends deeply on the different type and preparation of anode / cathode material . while the effective research on anode material has already been done , study of cathode material with good electrochemical performance has become a key factor 鈉離子電池的優(yōu)異性能在很大程度上取決于正、負(fù)極材料的選擇和制備,在當(dāng)前負(fù)極材料的研究取得良好進(jìn)展的前提下,獲得鈉離子嵌入/脫嵌性能良好的正極材料成為該類電池發(fā)展的一個關(guān)鍵。