【《科技探索 城市創新動力》ep5】【山東青島：高鐵之都不斷提升「中國速度」】
Synopsis
中國高鐵動車組每5列就有3列產自山東青島，專屬香港的高鐵列車——動感號也在青島製造。 從「和諧號」到「復興號」，再到 ...
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