How To Measure Surface Roughness
Surface roughness is an important index for most surfaces involved in...
Surface roughness is an important index for most surfaces involved in...
The roundness or cylindricity instrument is a important measuring instrument to...
As the surface characteristic of object, gloss is closely related to...
Light fixtures are important lighting tool in life. They are helpful...
Heavy metal water refers to the abnormal concentration of metal elements...
https://youtu.be/2a8yDZx87Ww Factors affecting the strength of concrete The strength of concrete is one...
Ammonia nitrogen refers to the combined nitrogen of ammonia or ammonium...
The concrete cracks determination mainly includes the location, shape, distribution, width,...
The more soluble salts in water, the more ions, and the...
Chloride ion is a common anion in water. Too high content...