lengthilyadv.长地；冗长地lengthn.长度；时间长短；距离；一段；距离的测量单位Length of air column空气柱长度length of engagement啮合长度length of pretection[法] 保护期限length of time-out暂停时间length of one's days改道阿富汗Length of intubation插管长度length of identifier标识符长度length of air cavity空腔长度lengthwise direction纵向length-to-height长高比

1. Set User Defined Block Length.
   用户自定义数据块长度。