{HEAD ~ The metal hydride canister apparatus} 2, wherein {TAIL ~ the filtering net} is made of stainless steel 
wherein
{ HEAD ~ The metal hydride canister apparatus } 2 , wherein { TAIL ~ the filtering net } is made of stainless steel
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH