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zhangxiaosan

zhangxiaosan hat veröffentlicht:

zhangxiaosan
Road design for the artificial structures Village road with space, power stations, parking stations, gas stations, shops, dam gates and other building structure along the combination, especially in combination with the design of urban roads lined with groups of buildings and space, building ...

How to choose brick

zhangxiaosan hat veröffentlicht:

How to choose brick
We in the selection of floor tiles except when required according to the decoration style and personal preferences, but also should pay attention to the following points: 1, taken from FCL to any one, to see if the surface is flat, in good condition; glazed is uniform, shiny, no spots, and whether ...

qzz10011

qzz10011 hat veröffentlicht:

qzz10011
Physical properties of metal materials Physical properties of the metal main considerations: ⑴ density (specific gravity): ρ = P / V units of g / cc or t / m, where P is the weight, V is the volume. In practice, in addition to calculate the weight of the metal parts according to density, but it ...