(n-1)f轨道参加成键
participation of (n-1)f orbitals in the bond formation
Ⅰ型板式无砟轨道
type slab ballastless track
25Hz微电子相敏轨道电路
25 Hz phase detecting track circuit
25Hz相敏轨道电路
25Hz phase detecting track circuit
Ab initio分子轨道计算
Ab initio molecular orbital calculation
AM1半经验分子轨道方法
semi-empirical molecular orbital method AM1
CRTS Ⅰ型板式无砟轨道
CRTS Ⅰ slab ballastless track
CRTSⅠ型板式无砟轨道
CRTSⅠslab ballastless track
CRTSⅡ型板式无砟轨道
CRTS Ⅱ slab ballastless track
CRTSⅡ型轨道板
CRTS Ⅱ ballastless track slab
CRTSⅡtrack plate