External torques arise from outside the system. 外轉矩是由系統外部生產(chǎn)的。
Four types of external balances are in general use. 通常使用的外式天平有四種。
This paper analyzes the dynamic characteristic of complex plywood by the theory modal analysis technology. 摘要以懸臂復合層板為研究對象，利用理論模態(tài)分析技術(shù)，研究了復合層板的動(dòng)態(tài)特性。
Meanwhile, two examples about calibrating transducer's dynamic response characteristic are given. 同時(shí)，給出了采用正弦壓力發(fā)生器校準傳感器動(dòng)態(tài)特性的兩個(gè)實(shí)例。
