The three theories and six models concerning the nanometer electro-deposition mechanism were highlighted, while the advantages and disadvantages of various models were summarized.

The dicussion mainly covers the fabrication methods,the influential factors,the tissues of pyrolytic carbon and the deposition mechanisms involved in the process.

The influence of processing condition on the depositing rate and diamond content of electroless Ni-P-diamond composite plating was studied as well as the depositing mechanism of composite coating.

N-containing cationic surfactant 1631 was used as the hydrogen-evolution retarding agent so as to prevent the competitive precipitation of H+ with Cr 3+ ions during the electrodeposition of chromium and increase the electrodeposition efficiency of chromium.

In a 2 x 6 factorial experiment , five hundred and fifty Roman laying hens , 57-week age , were randomly divided into 11 groups to study the effects of supplemental dietary of different chromium sources (chromium nicolinale and chromium yeast) and chromium level on egg production performance , egg quality , blood biochemical parameters of laying hens , and the deposit of chromium in eggs .

The codeposition mechanism of Co - WC is accordance with Guglielmi tWO - step adsorption m.