54
ƾ

ҿ԰㴫͵ž,Ҫȥ?

ȸ
׻



ҪҪ˵
ȸ
űͼ,ȥڰ,Ҫ8ڱܹ
ȸڱ
ڱ

򿪱䣬
⺤
̼
þ
벼ظ
H_He_Li_Be
B_C_N_O
F_Ne_Na_Mg_Al_Si	
P_S_Cl_Ar_K_Ca
Ѿ
Ԫ˳ɱĹ



ͳ
ٻ

Ű
Ŀ
Ű
׻







ʡ
ȸ
δȸ
ţȸ
ĩȸ
ȸ
ţȸ
ܽ
ܽͼͶ,ϿͶ
ܱ,,û˺....
׻ȸ