| 释义 | 
             
                tangent retarder
                
            undersecretaryn. 次长;副部长contradistinctionn. 对比;对比的区别incontrovertiblyadv. 无疑地
 阻滞剂zǔ zhì jì 
 retarder公切线gōng qiē xiàn 
 common tangent切线qiē xiàn 
 tangent切线的qiē xiàn de 
 tangent, tangential相切的xiàng qiē de 
 tangent, tangential接触的jiē chù de 
 osculant, osculatory, tangent损耗正切sǔn hào zhèng qiē 
 loss tangent缓凝剂huǎn níng jì 
 retarder减速器jiǎn sù qì 
 reducer, retarder正切zhèng qiē 
 secant, tangent正切定律zhèng qiē dìng lǜ 
 law of tangents突然离题tū rán lí tí 
 fly off at a tangent突然改变行经tū rán gǎi biàn háng jīng 
 fly off at a tangent
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