Pakistan has experienced a wave of terror attacks, including suicide blasts targeting international and security organizations, coordinated attacks around the country's cultural center,Lahore, and an audacious assault on the army's headquarters near Islamabad.

VOA: standard.2009.10.17

Similarly, with the second hydrogen atom, we've got the nucleus in the middle, and the 1 s b wave function around it.

类似的，在第二个氢原子里面，我们在中间有原子核，周围有1sb波函数。

麻省理工公开课 - 化学原理课程节选

Similarly, with the second hydrogen atom, we've got the nucleus in the middle, and the 1 s b wave function around it.

类似的，在第二个氢原子里面，我们在中间有原子核，周围有1sb波函数。

麻省理工公开课 - 化学原理课程节选