什么是nucleation and pinning field啊?请问下

什么是nucleation and pinning field啊?请问下 nucleation是什么意思 什么是pi键 homogeneous nucleation是什么意思 nucleation-doping什么意思 heterogeneous nucleation是什么意思 heterogeneous nucleation是什么意思 英语翻译In these cases,the dense liquid is contained in metastable clusters,intriguing objects in their own right,and crystal nucleation occurs within the clusters.这个是原句, 什么是Annexin V-FITC/PI双染色 英语翻译A large amount of theoretical and experimental research has beenconducted on extrusion processes involving gas-liquid mass transfer.The emphasis has been put on the extruder die end and beyond where gasbubble nucleation and growth occur.L pi pi matlab fprintf问题.输入fprintf('%s %4.2f ','PI is',pi) 的结果为什么是PI is3.14 PI的 初始值为什么是pi=1#includemain(){int s;float n,t,pi;t=1,pi=0;n=1.0;s=1;while(fabs(t)>1e-6){pi=pi+t;n=n+2;s=-s;t=s/n;}pi=pi*4;printf("pi=%10.6f ",pi);}PI的初始值为什么是 0我看错了 因为PI是SUM sum=sum+T SUM第 arcsec(-2/sqrt3)答案为什么是5pi/6?而不是7pi/6arcsin(cos 5pi/6)答案为什么是-pi/3?pi就是3.1415926那个sqrt3,就是根号3 But I need you write it down on PI and send revised and signed PI from your side. 什么是and so on? 什么是Miffy and griends