It is because cell phones affect the areas of the brain responsible for activating and co-coordinating the stress system, making it harder for people to fall asleep, researchers said.
研究人员认为，手机辐射可能会刺激大脑的应激系统，使人更警觉，精神更集中，放松及入睡的能力因此减弱。
2
Viscose rayon based ACF was prepared by CO2 activation. Furthermore, the effect of addition of CO in activating gas on pore structure was investigated.
以CO2为活化剂制备了粘胶基活性炭纤维，并研究了CO的加入对孔结构的影响。
3
The mechanism in peer learning mainly includes social comparison, feedback, modeling, activating inert knowledge, cognitive conflict and co-construction.