diameter

直径英释nna straight line from one side of a circle to the other side, passing through the centre of the circle, or the length of this line

1 particle diameter,粒径；颗粒直径，粒子直径

2 pipe diameter,管直径

3 inner diameter,内径

4 hole diameter,孔直径；刃口直径

5 pore diameter,孔径；孔隙直径

6 outside diameter,外直径

7 outer diameter,外直径

8 inside diameter,内径

9 diameter ratio,直径比；内外径比；直径螺距比

10 average diameter,n. 平均直径；算术平均径

11 internal diameter,内直径

12 pitch diameter,节圆直径

13 mean diameter,平均直径；中径；二次平均直径

14 major diameter,大直径，外径；螺纹大径，大径

15 bore diameter,孔径，内径

16 external diameter,外径

17 grain diameter,粒径，颗粒直径

18 wire diameter,线径；焊丝直径

19 nominal diameter,公称直径；标称直径

20 equivalent diameter,当量直径

1 ...a tube less than a fifth of the diameter of a human hair..…一根直径不到头发五分之一的微管。