{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 {TAIL ~ boron oxide} for a predetermined period of 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 { TAIL ~ boron oxide } for a predetermined period of 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 TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH