Thus, xylene in the coating film is vaporized, and Al3 and B3 are thermally decomposed to form {HEAD ~ a jointing material} composed of {TAIL ~ amorphous or γ layer alumina} and amorphous boron oxide  
composed of
Thus , xylene in the coating film is vaporized , and Al3 and B3 are thermally decomposed to form { HEAD ~ a jointing material } composed of { TAIL ~ amorphous or γ layer alumina } and amorphous boron oxide
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH