Date: Sat, 29 Jun 2013 18:43:44 +0800 J~k'b2(p3
hi, mk
I remembered you said it's better not to use "lag". (I\qTf
N4
But I found it's really need it, maybe it's must.
for example, in piping project, transport the piping (布管) 和 welding(焊接),after piping (布管) going on 3or 4 days,it can do welding. There are so many this case, not SS, not FS, just need do SS and lag. (交叉作业)
I want to practise my English. So I write in English.
Sure lag is NOT must. Use lag because planner/scheduler lazy only.
B):hm ^{l$>e] In your example, what is the purpose for that 3 or 4 days? This purpose can be an activity. If it is an activity, then piping FS(0) to "purpose" then FS(0) to welding
