But ever finer control of the temperature gradient around the seed is eliminating the telltale imperfections that jewelers could once detect with a magnifying glass.
But ever finer control of the temperature gradient around the seed is eliminating the telltale imperfections that jewelers could once detect with a magnifying glass.
然而，一种能更精细控制晶种周围温度梯度的方法，正逐渐去除这种遮掩不了的瑕疵。