单词：pdl 

名词

• 
  [1.n.pdl] (同义词:[poundal( n. [物]磅达(力的单位) )]  [pdl]  )
• 
  注释列句：a unit of force equal to the force that imparts an acceleration of 1 foot/sec/sec to a mass of 1 pound; equal to 0.1382 newtons
• 上位词 -> [force_unit]  [unit_of_measurement]  [definite_quantity(定量 )]  [measure( n. 尺寸, 量度器, 量度标准, 方法, 测量, 措施 vt. 测量, 测度, 估量, 分派, 权衡, 调节 vi. 量 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )]