This plan main point provides one kind not to have the contact, the adjustable distance eyeglasses.
这一方案的要点是提供一种无接触、可调距离的眼镜。
The point of the most normal pressure was analyzed in the contact points between the adjustable ring and the planet cone.
分析出了调速环和行星锥的接触点为行星锥上正压力最大的点。
The point of the most normal pressure was analyzed in the contact points between the adjustable ring and the planet cone.
分析出了调速环和行星锥的接触点为行星锥上正压力最大的点。
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