 The advancement of all-electronic television (including image dissectors and other camera tubes and cathode ray tubes for the reproducer) marked the beginning of the end for mechanical systems as the dominant form of television.
<fluency>  The advancement of all-electronic television (including image dissectors and other camera tubes and cathode ray tubes for the reproducer) marked the beginning of the end for mechanical systems as the dominant form of television.
 The advancement of all-electronic television (including image dissectors and other camera tubes and cathode ray tubes for the reproducer) marked the start of the end for mechanical systems as the dominant form of television.