例句與造句

1. Combining quantum chemistry calculation with experimental evaluation , the activation energies of possible interfacial reaction were calculated . it is shown that the first step in which the atomic ti , c and si were decomposed from ti matrices and fiber , respectively , is a rate - controlling step because the activation energy of the step is larger than second one
   量子化學(xué)計算與經(jīng)驗估算相結(jié)合，求出了可能發(fā)生的界面反應(yīng)的活化能，表明第一步驟的活化能遠(yuǎn)大于第二步驟的活化能，因而第一步驟是反應(yīng)的動力學(xué)控制因素，在這一步驟中，原子態(tài)的ti 、 si 、 c分別從基體鈦合金和纖維中分解出來。
2. It's difficult to find rate-controlling step in a sentence. 用rate-controlling step造句挺難的