shift reaction的用法和样例：
例句
- Experimental results show that the reaction acts up on transannular-surroundings electron transfer reaction mechanisms.
实验表明，此反应遵循外环外界电子转移反应机理。 - The hydrogen transfer reactions were exothermic, so a reduced reaction temperature was in favor of the catalytic cracking desulfurization of thiophene.
由于氢转移反应为放热反应，因而降低反应温度有利于噻吩催化裂化脱硫。
