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