径，汉字，本义是陡直的山路、狭窄的道路。
径 diameter
田径 Athletics ; Track and field
半径 [数] Radius ; [天] [数] semidiameter ; Alt
口径 [军] calibre ; [军] Caliber ; mm
粒径 [物] particle size ; nm ; [物] grain size ; particle diameter
公称通径 Nominal diameter ; DN ; Nominal bore ; [机] nominal size
直径 [数] Diameter ; mm ; DIA ; Dimension ; diameter
路径 [通信] path ; [通信] route ; tracers ; track
公称直径 [机] nominal diameter ; DN ; DNNominal ; nominal size
外径 [机] outside diameter ; [机] outer diameter ; external diameter ; major diameter
结果表明，椎体后高、椎体上矢径呈正异速生长。
The results show that posterior height of vertebral body and Upper antero-posterior diameter of vertebral body are positive allometry.
然后进入再热炉、减径机和冷却床。
Then there is reheating furnace, reducing mill and cooling table.
他望着园里的那个人一径走去。
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