The hydrogen permeable material exhibits excellent hydrogen permeability as well as {TAIL ~ excellent resistance} to embrittlement caused by {HEAD ~ the permeation} of hydrogen 
The hydrogen permeable material exhibits excellent hydrogen permeability as well as { TAIL ~ excellent resistance } to embrittlement caused by { HEAD ~ the permeation } of hydrogen
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH