For coating a waterproof layer on the CR surface, comparison and selection have been made among several biocompatible materials.
采用壳聚糖棒材外表面涂覆物理防水层的思路，对各种生物相容的疏水材料进行了选择和比较。
The biocompatible metal surface of the implant is submitted to electrochemical etching in an electrolyte to which an electric current is applied.
所述植入物的生物相容性金属表面在施加电流的电解质溶液中进行电化学蚀刻。
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