图纸Drawing sheet图板Drawing board比例尺Scale ruler三角板Triangle圆规CompassesThe ratio of drawn size to life size is the scale.分规Dividers尺寸DimensionsScale Drawn size Life size比例Scales图框Border1:1124:1标题栏Title blockFull size,Reduction ratio,Enlargement ratio细实线Continuous thin line波浪线Continuous thin irregular line细/粗虚线Thin/Thick long dashed line细点画线Thin long dashed dotted line长对正The length alignment宽相等The width equality高平齐The height alignment多边形PolygonDesignation Width(mm)Length (mm)841A1594841A2420594A3297420A5149210B17071000B2500707B3353500B4250253A0 sheet1m2(长宽比1：V2)1in.=25.4mm横向Landscape纵向Portrait作图顺序：1.已知线段Known segments2.中间线段Intermediate segments3.连接线段Connection segments中心投影法Central projection method平行投影法Parallel projection method正投影法Orthogonal projection method透视投影法Perspective projection method真实性Authenticity积聚性Accumulation类似性Similarity三视图Three-view drawings铅/正/侧垂线/面HWW-perpendicular line/,plane水/正/侧平线/面Horizontal/Frontal/Profile line/plane一般位置直线/平面General position line/,plane平面立体Polyhedron/Polyhedral solids曲面立体Curved/Revolving solids棱柱Prism棱锥Pyramid圆柱体Cylinder圆锥ConeThe trajectory of any point on the generatrix is a circle(latitude circle).The circle centeris the intersection of the trajectory plane with the axis,and the radius is the distance fromthe point to the axis.surface.母线Generatrix素线Prime line纬圆Latitude circle经度圆Longitude circle赤道圆Equatorial circle子午圆Prime meridian circle转向轮廓线Dividing line./Steering contour截交线Intersection line截平面Cutting plane断面Section叠加式Superposition切割式Cutting综合式Synthesis形体分析法Shape and solid analysis method线面分析法Analysis method of lines and planes1.定型尺寸Size dimension2.定位尺寸Position dimension3.总体尺寸Overall dimension尺寸标注要求：正确correctness,.完整integrity,清晰clarity,合理reasonableness尺寸基准Dimension datum