D系列的双垂尾总量和比737的单垂尾轻70%。

The D-series’s twin tails are, in total, 70% lighter than a 737’s single one.

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D系列的双垂尾总量和比737的单垂尾轻70%。

The D-series’s twin tails are, in total, 70% lighter than a 737’s single one.

youdao