求翻译：（4）利用透射电镜对制备出来的多孔贵金属薄膜的形貌、物相进行观察，再测量其相关光学的特性。最后，根据多孔金属薄膜的表征研究多孔贵金属薄膜制备的最佳条件。是什么意思？

(4) TEM preparation of porous noble metal film morphology, phase were observed, and then measured the optical characteristics. Finally, the optimal conditions of the porous metal film characterization of porous noble metal thin films.

(4) use transmission power mirror to produce a porous metal-film, which should be observed, and measurements of the optical characteristics. Finally, on the basis of the porous metal film study table, with a porous metal film produced the best conditions.

(4) using the transmission electron microscope to the porous precious metal thin film appearance, the phase which prepares carries on the observation, again surveys its correlation optics the characteristic.Finally, according to porous metal thin film attribute research porous precious metal thin fi

(4) using transmission electron microscopy on the preparation of porous phase of precious metal thin film morphology, observing and measuring its optical properties. Finally, based on the porous metal thin film characterization of porous films in the best conditions of precious metals.

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