The color of light depends on the spectrum. The spectral composition of light color is determined by the type of light, while the spectral composition of object color is determined
It is necessary to pay attention to the strength of the joint surface of the old and new foundation. 4. Executive standard of architectural communication media ID: jianzhong001: Code for
Because grandpa was a very prominent architect, even in the late Cultural Revolution and before the smashing of the gang of four Later, in 1977, he implemented the policy and