As well as the new aircraft, it is expanding its navy's capabilities, re-fitting older Russian aircraft carriers as well as building new ones.
包括新的航空母舰，它大大的扩展了他的海军水平。他正在翻修俄国的航母，同时自己也在造新的。
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The author proposes a sectional line fitting to re - place the polynomial curve fitting, which results in simplifying establishment of mathematical model and reducing the amount of calculation work.