2065438+07 NBA Top 200 Annual Salary Ranking List

There are many kinds of materials for marble testing platform, that is, newly mined stone, with a wide variety and uneven quality, so the direct consequence is that the price of marble testing platform varies widely; So today, let's talk about how to distinguish marble inspection tables with different materials; Good marble inspection table, bright black. Jinan black and Taishan Green belong to this kind of stone with stable performance. Ordinary marble inspection table, the original material color is gray, like a layer of yarn on the stone, can not be wiped off; This kind of stone has poor performance, and its accuracy can only reach level 0; Identifying the appearance quality of marble is one of the basic understandings of marble platform, and we can judge it from the following aspects: 1. Check surface defects. In the case of sufficient light, the plate is laid flat on the ground, and the invisible defects are observed at the distance lm from the marble plate, and it is considered that there are no defects; Defects that are visible from the plate lm but not obvious at 1.5m are not obvious defects; An obvious defect at a distance of 1.5m from the plate is regarded as a defect. Second, determine the color of the pattern. In the case of sufficient light, the selected board and other marble boards to be purchased in the same batch shall be laid flat on the ground at the same time, standing at a distance of 1.5 m for careful visual inspection. It is required that the patterns and tones of the same batch of marble plates should be basically coordinated. III. Check and mark the marking sequence of marble inspection bedplate: naming, classification, specification, size, grade and standard. The naming order of marble plate is: raw material place name, pattern and tone feature name, marble (code name M).