• 2022-11-03 问题

     初态为 [tex=6.286x1.286]Af2nNQiqRnPe4VAgZ4UOoY4YoiGqY4Mom2IrdPfiW/iXEVYCv5z8+kxk8zdSo52vk8g9HJ6Jd/fOqEWbC/vQmQ==[/tex] 的水蒸气以初速 [tex=3.286x1.357]FlWZRlYvw+0pesbd/eX1CbDkPhXYtZDULr+2DPcL3VceAFjZC2dgprrOshUmbyCv[/tex] 进入喷管, 在喷管中绝热膨胀到 [tex=3.643x1.214]dlLmA+xUWevBMd3QqSDH49sfQFL2h0Mj9jkW9ahEQDg=[/tex]已知流经喷管的质量流量为[tex=4.214x1.357]By0WpsIBXx5wC2CPtpbAU0iLwqqonQtrjIDk+qvk53s=[/tex](1) 忽略磨擦损失, 试确定喷管的型式和尺寸

     初态为 [tex=6.286x1.286]Af2nNQiqRnPe4VAgZ4UOoY4YoiGqY4Mom2IrdPfiW/iXEVYCv5z8+kxk8zdSo52vk8g9HJ6Jd/fOqEWbC/vQmQ==[/tex] 的水蒸气以初速 [tex=3.286x1.357]FlWZRlYvw+0pesbd/eX1CbDkPhXYtZDULr+2DPcL3VceAFjZC2dgprrOshUmbyCv[/tex] 进入喷管, 在喷管中绝热膨胀到 [tex=3.643x1.214]dlLmA+xUWevBMd3QqSDH49sfQFL2h0Mj9jkW9ahEQDg=[/tex]已知流经喷管的质量流量为[tex=4.214x1.357]By0WpsIBXx5wC2CPtpbAU0iLwqqonQtrjIDk+qvk53s=[/tex](1) 忽略磨擦损失, 试确定喷管的型式和尺寸

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