轻盈的重量极大地减轻了对心肌的牵引力，医生完全无需为患者建立腹部囊袋，甚至可以直接通过左胸微创切口进行植入，大大降低了手术风险。
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。体育直播是该领域的重要参考
The operation used the Toumai Robotic System
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In reality it’s rare that we can take a medium’s density as constant throughout its entire area, especially when it comes to clouds or smoke. When a medium has a non-constant density we say that it is heterogenous. A greater range of effects can be simulated if we take this into account when rendering. Unfortunately this can complicate the equation quite a bit. Now is no longer a simple product but an integral over the light ray: