经过试验分析，得出了玻璃表面涂覆法和溶胶凝胶法是使玻璃表面黑化的可行途径。
It is found that the glass surface coating method and the collosol-gelling method are feasible for the blackening of glass surface.
某些品种的猫科动物有规律地产生“黑化”现象——其中所谓的黑豹(确切地说，是黑化的美洲豹)是最为常见的。
Some species of cat regularly produce melanic forms-the so-called black panther (actually a melanic jaguar) being the most familiar.
然而，约翰·克雷格黑德说，他那漫长而故事化的一生最骄傲的成就是自然与风景河流条例的通过。
Yet the proudest achievement of John Craighead's long and storied life, he says, is the passage of the Wild and Scenic Rivers Act.
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