Width b (capital b) is the first letter of width.
Height h (capital h) is the first letter of height.
Depth d (capital d) is the first letter of depth.
What letters are used to indicate the length and width in CAD drawing? In CAD drawing, the letters of length and width are length L and width W respectively.
Letters in CAD have different meanings, such as R for radius, D for diameter and M for thread. There are many similar symbols, most of which are tolerance symbols.
Relevant knowledge is listed as follows:
1) standard tolerance and tolerance level standard tolerance refers to any tolerance used to determine the size of the tolerance zone. Tolerance level refers to the level that determines the dimensional accuracy. According to the national standard, the tolerance grade is divided into 20 grades: IT0 1, IT0, it1-it18. It stands for standard tolerance, and the code of tolerance grade is represented by * * * numbers. IT 0 1-IT 18, and the accuracy grade decreases in turn. Standard tolerance is a function of basic dimensions. For a certain basic size, the higher the tolerance level, the smaller the standard tolerance value and the higher the dimensional accuracy. The standard tolerance values of holes and shafts with the same basic size and tolerance level are equal. The national standard divides the basic dimension range of ≤500mm into 13 segments, and lists the tolerance values of basic dimensions of each segment according to different tolerance levels, which is the standard tolerance.
2) Basic deviation Basic deviation refers to the upper and lower deviation used to determine the position of the tolerance zone relative to the zero line, generally referring to the deviation close to the zero line. According to the actual needs, the national standard stipulates 28 different basic deviations for holes and shafts respectively. The basic deviation is expressed in Latin letters, with capital letters representing holes and lowercase letters representing axes. The basic deviation of the axis is from a-h to the upper deviation, and from j-zc to the lower deviation. The upper and lower deviations of js are+and-respectively. The basic deviation of borehole is from A-H to lower deviation and from J-ZC to upper deviation. The upper and lower deviations of JS are+and-respectively. Another deviation of shaft and hole can be calculated by the following algebraic formula according to the basic deviation and standard tolerance of shaft and hole. Upper (or lower) deviation of axis: es focuses on ei+IT or EI = ES-IT; Another deviation (or lower deviation) of the hole: ES=EI+IT or EI=ES-IT.
Question 3: What letters are used to indicate the length, width and height of a building? It should be the abbreviation of long, wide, high, high, wide and long English words, that is, high w and long l.
Question 4: In mathematics, what are the letters representing length, width, height, area and volume? What are the common lengths? They can be represented by abc, or L represents length, H represents height and W represents width, but W rarely appears, S represents area and V represents volume.