raction的用法和樣例：
例句
- Furthermore, the structure analysis of various products during raction processes was also presented here.
考察了反應條件對催化結果的影響，並對反應過程中的各產物結構進行了分析，探討了各產物生成的可能的機理。 - When higher reaction temperature and longer raction time is provided, the melting point and crystallinity of resultant PLGA will decrease due to oxidation and depolymerization.
而當溫度更高或反應時間更長時，由於氧化及熱降解的發生，致使結晶度及熔點轉而下降。
