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潜(qián )艇(tǐng )或(huò )飞(fēi )机(jī )上(shàng )用(yòng )以(yǐ )调(diào )节(jiē )升(shēng )降(jiàng )的(de )舵(duò )。潜(qián )艇(tǐng )上(shàng )的(de )也(yě )叫(jiào )“水(shuǐ )平(píng )舵(duò )”,设(shè )在(zài )艇(tǐng )的(de )首(shǒu )尾(wěi )部(bù )。飞(fēi )机(jī )上(shàng )的(de )装(zhuāng )在(zài )水(shuǐ )平(píng )安(ān )定(dìng )面(miàn )之(zhī )后(hòu )。
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