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血流的管道 — 血管 PowerPoint PPT Presentation


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第四章第二节. 4-باپ 2-پاراگىراف. 血流的管道 — 血管. قان ئايلىنىش يولى-قان تومۇرلار. 实验:. تەجرىبە. 观察小鱼尾鳍内血液的流动. بېلىقنىڭ قۇيرۇق پالاقچىسىدىكى قاننىڭ ئايلىنىشىنى كۆزىتىش. 方法步骤 :. 1 、用湿的棉絮将小鱼头部的鳃盖和向躯干部包裹起来,露出口和尾部。. تەجرىبە باسقۇچى.

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血流的管道 — 血管

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