The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure).
鱼的背鳍, 腹鳍, 胸鳍帮助(鱼儿)对准水流方向, 以这种方式来减少水对鱼身的阻力。
单词 | finlet |
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7天搞定托福单词 The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure). 鱼的背鳍, 腹鳍, 胸鳍帮助(鱼儿)对准水流方向, 以这种方式来减少水对鱼身的阻力。 |
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