古代青铜镜的镜面有平面的，也有凸面的。
The front of ancient bronze mirrors has flat and concave surface .
传统解剖聒型总义齿人工牙凸面的牙尖平衡斜面形态是形成稳定顺畅的咀嚼过程的不利因素。
The cusp balance inclination of tradition anatomic occlusal form artificial teeth is convex, which is a disadvantage factor to set up stable and unhindered chew course.
说它们是镜头，因为它们是凸面的容器。盛满水后，它们可作为镜头使用，你可以通过它们看到颠倒过来的地平线。
They're lenses because they're convex vessels, and when they're full of water they act as a lens and you see the horizon in them, upside down and backwards.
我们还有一个余热去除系统，那将凸面的热量除去，并将热量转化为外源，提供冷却剂水，让它能够继续，将喷雾再循环。
And we also have a residual heat removal system that also takes the heat from the torus and transfers that heat to an external source providing coolant water to continue to re-circulate the sprays.
我们还有一个余热去除系统，那将凸面的热量除去，并将热量转化为外源，提供冷却剂水，让它能够继续，将喷雾再循环。
And we also have a residual heat removal system that also takes the heat from the torus and transfers that heat to an external source providing coolant water to continue to re-circulate the sprays.
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