When the shaped catalyst and the auxiliary packing material each have {HEAD ~ a ring shape} or a Raschig ring shape, the bulk volumes thereof are each a volume of {TAIL ~ a cylinder} defined by the circumferential side wall 
When the shaped catalyst and the auxiliary packing material each have { HEAD ~ a ring shape } or a Raschig ring shape , the bulk volumes thereof are each a volume of { TAIL ~ a cylinder } defined by the circumferential side wall
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH