特殊用法airscrew diameter1.螺旋桨直径angle diameter1.(锥形螺纹)中径angular diameter1.角直径antenna diameter1.天线直径antero-posterior diameter of vertebral foramen1.椎孔矢径approximate diameter1.近似直径armature diameter1.电枢直径atomic diameter1.原子直径average diameter1.平均直径average particle diameter1.平均粒子直径balance diameter1.摆轮直径bar diameter of spring1.簧条直径basal diameter1.底面直径base diameter1.底座对径, 根部对径basic pitch (of screw) diameter1.(螺纹的)基本中径beam diameter1.射束直径bit diameter1.钻头直径blank diameter1.(毛坯直径)外径bore diameter1.镗孔直径2.量规3.孔径bottom diameter1.螺纹内径, 螺纹底径breast-height diameter1.胸高直径calculated diameter1.计算直径chest-height diameter1.胸高直径clear valve diameter1.阀孔径clearance diameter1.(麻花钻上的)留隙直径, 隙径collision diameter1.碰撞直径column diameter1.柱直径commutator diameter1.整流子直径computed diameter1.计算直径conjugate diameter1.共轭直径core diameter of thread1.螺纹底径critical diameter1.临界直径cut-off diameter1.(波导管)临界直径, 截止直径crown mean diameter1.树冠平均直径cylinder diameter1.磁鼓直径cylinder bore diameter1.气缸内径cylinder inside diameter1.缸内径diaphragm diameter1.振膜直径; 光阑直径die throat diameter1.模孔直径disc diameter1.唱片直径disk diameter1.圆盘直径drilled diameter1.钻孔(最大)直径drum diameter1.磁头鼓直径duct diameter1.风渠直径effective diameter1.有效直径; 中径; 节径effective diameter of picture area1.有效画面直径effective molecular diameter1.【物化】有效分子 直径equatorial diameter1.赤道直径(等于12753.44公里)equiconjugate diameter1.等共轭直径equivalent diameter1.当量直径equivalent circle diameter1.圆当量直径equivalent flaw diameter1.当量缺陷直径equivalent free-falling diameter1.【冶】等效自由沉降直径exit diameter1.出口截面直径exploitable diameter1.可利用的径级external diameter1.外径eye diameter1.入口直径(离心式压气机入口)focused spot diameter1.焦斑直径fuel-hole diameter1.燃料喷嘴孔径geometric mean diameter1.几何平均直径grain diameter1.粒径hydraulic diameter1.水力直径ideal critical diameter1.理想临界直径inner diameter of the recorded surface1.(唱片)录声面内径inside diameter1.内径interior diameter1.内径inside nominal diameter1.公称通径installation diameter1.装配图interocular diameter1.两眼内径interpupillary diameter1.瞳孔间径lens diameter1.透镜直径linear mean diameter1.线性平均直径major diameter1.大直径maximum diameter of gear cut1.齿轮切削最大直径maximum diameter of hole1.最大孔径maximum admitted diameter of work1.工件最大许可直径maximum drilling diameter1.最大钻孔直径maximum grinding diameter on centers1.中心最大磨削直径maximum machining diameter1.最大加工直径maximum outside diameter of gear cut1.最大齿轮切削外径maximum swing diameter of work over bed1.车床床面上加工最大直径maximum swing diameter of work over carriage1.车床在刀架上的最大加工直径mean diameter1.二次平均直径mean coil diameter1.簧圈平均直径mean effective diameter1.平均有效直径mean particle diameter (size)1.平均粒径mean volume-surface diameter1.平均(体积-面积)粒径median particle diameter1.【地质】中值粒径mid-timber diameter1.材干中央直径milling cutter diameter1.铣刀直径minor diameter1.小直径minor diameter of thread1.螺纹内径module diameter1.机心[组件]直径motor chamber diameter1.发动机燃烧室直径molecular diameter1.分子直径neck diameter1.颈部直径nodal diameter1.波节直径nominal diameter1.通称[标称]直径nuclear diameter1.核直径outer diameter of recorded surface1.录音面外径outside diameter1.外径overall diameter1.全径particle diameter1.【地质】颗粒直径piston diameter1.活塞直径pitch diameter1.层心直径, (齿轮的)节径, (螺纹的)中径pore diameter1.孔径printing diameter1.印刷直径projection diameter1.凸起直径punching hole diameter1.冲孔直径rim diameter1.轮辋直径rolling diameter of wheel tread1.轮辋滚动直径root diameter1.齿根圆直径; 内螺纹外径, 外螺纹内径rotor diameter1.转子直径sauter diameter1.沙得直径screw diameter1.螺旋直径sedimentation diameter1.【地质】沉积直径settling velocity diameter1.(粒子的)沉降速度径shank diameter1.(锻件上的)柄直径short diameter1.小头直径small-end diameter1.梢头直径specific punchdiameter1.相对凸模直径specific surface mean diameter1.比表面平均直径spherical equivalent diameter1.球(当量)直径spot diameter1.斑直径statistical diameter1.【冶】统计直径sweep diameter1.扫描直径swell diameter1.【航空】膨胀直径swing diameter of work1.工件回转直径thread root diameter1.螺纹内径throat diameter1.喉部直径, (喷管的)临界截面直径top diameter1.梢头[端]直径, 顶径tunnel diameter1.隧道直径upset diameter1.镦锻直径valve diameter1.气门径visible crown diameter1.【摄】可见冠幅visual diameter1.视直径volume surface mean diameter1.体表面积平均直径weight-mean diameter1.平均重量粒径(以表面积为基准的平均粒径)wetted diameter1.(喷灌机的)浇灌直径diameter at butt end1.根端直径, 大头直径, 干基直径diameter of a conic1.二次曲线的直径diameter of a linear complex1.线性线丛的直径diameter of aperture1.(天线等的)孔径diameter of axle1.轴径diameter of commutation1.【电】换向直径diameter of movement1.机心直径, 结构直径diameter of part1.零件直径diameter of stack openning1.烟囱上口直径diameter of target1.靶环直径