{HEAD ~ the third step} of arranging another member on the joining layer and heating the joining layer to not less than a temperature which is a melting point of boron oxide for a predetermined period of {TAIL ~ time} 
{ HEAD ~ the third step } of arranging another member on the joining layer and heating the joining layer to not less than a temperature which is a melting point of boron oxide for a predetermined period of { TAIL ~ time }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL