In this preferred process, {HEAD ~ only the initial thin layer} is deposited from {TAIL ~ the lower concentration solution}, the entire remaining thickness being plated from more concentrated solution 
is deposited from
In this preferred process , { HEAD ~ only the initial thin layer } is deposited from { TAIL ~ the lower concentration solution } , the entire remaining thickness being plated from more concentrated solution
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH