According to the principle of constructing elliptical conical surface by the circles on a sphere, a T-joint inscribed in a sphere is designed.
根据“球面上圆构造椭圆锥面”的原理，设计了球内接三通接头。
According to the principle of constructing elliptical conical surface by the circles on a sphere, a T-joint inscribed in a sphere is designed.
根据“球面上圆构造椭圆锥面”的原理，设计了球内接三通接头。
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