[求助]PFC3D手册中3.2.2.6节Example 3.5 颗粒替换的参数如何理解？ [复制链接]

PFC3D用户手册中3.2.2.6节Example 3.5 Creating clumps中几个参数_cfac, _rfac ，hosei_w？ (c 1u{  
creating clumps by pair-particles, clumps have the same volume and weight as the original single particle e$x4Ux7*"  
_cfac 0.9009983, _rfac 0.25, hosei_w 0.684 in the case of [1:1.25] tvK rc  
_cfac 0.8399473, _rfac 0.5, hosei_w 0.844 in the case of [1:1.5] f};!m=b  
分别是什么意思？[1:1.25]指的是什么？