Furthermore, the process time can be defined as the interval from the first time point that {HEAD ~ the temperature} is lower than {TAIL ~ the predetermined temperature} by 400 C to the second time point where the temperature is ramped down to a temperature lower 400 C than the predetermined temperature 
is lower than
Furthermore , the process time can be defined as the interval from the first time point that { HEAD ~ the temperature } is lower than { TAIL ~ the predetermined temperature } by 400 C to the second time point where the temperature is ramped down to a temperature lower 400 C than the predetermined temperature
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH