The mass of fibers is characterized as possessing a bulk density of from 0.02 to {HEAD ~ 0.40 gram/cubic centimeter}, and each of {TAIL ~ the fibers} is characterized as having an average diameter of from 3 to 10 microns 
The mass of fibers is characterized as possessing a bulk density of from 0.02 to { HEAD ~ 0.40 gram / cubic centimeter } , and each of { TAIL ~ the fibers } is characterized as having an average diameter of from 3 to 10 microns
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH