It is a layer of guanine crystals which glow at night.这是的氨基羟尿环水晶层数发光在晚上.These crystals are then embedded in a plastic, and the plastic is extruded as a wire...然后将这些晶体嵌入一块塑料，再把塑料挤压成线。We tried to grow some copper sulphate ...
Feedwater, ink supply shut presss adopt high automatization system, magic eye control.给水, 油墨供应关闭出版社采用高自动化系统, 神奇的眼睛控制.Regenerative feedwater heaters are important auxiliary facilities of power plant.回热加热器是火电机组重要的辅助设备.The ...