请问下段话如何翻译和理解？

The difference in the crystalline nature of the films grown on the glass substrate and gold-coated glass substrate is most likely due to the energetic species bombardment. For the bare glass substrate which is at a floating potential， there is essentially no initial ion bombardment， as the nonconductive substrate charges up very quickly. Only the neutral species are allowed to bombard the growing film. On the gold-coated substrates， the ion bombardment remains effective throughout the growth process.
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