The fading reaction of DCB arsenazo with Cr 2 O 2 - 7 was studied.本文研究了DCB偶氮胂与Cr2O2-7的褪色反应.Cars were covered with clear-coat finish at the factory to protect the underlying paint from fading.工厂给汽车上了透明罩漆，以防底漆褪色。Hopes of a...
They can withstand extremes of temperature and weather without fading or cracking.它们能够经受极端的气温和天气状况而不褪色、不破裂。Outside, the light was fading rapidly.屋外的天色很快就暗下来。Jay nodded, his smile fading.杰伊点点头，笑容慢慢隐去了。...