This meant years of archival research and tracking down old and out-of-print books and trying to gather materials for lively profiles of people long dead and of weapons and tactics no longer in use.

这还意味着研究多年前的档案、收集旧书和绝版书籍、组织过世人现存的档案、以及研究已经不再使用的武器和战术。

youdao

The problem of adaptive tracking control for a class of T-S fuzzy systems with time-varying dead-zone is studied in this paper.

研究了一类带有时变死区的T-S模糊系统的自适应跟踪控制问题。

youdao

The tracking problem for a class of uncertain chaotic systems with dead-zone nonlinearity in the input function is considered in this paper.

研究了一类具有死区非线性输入的不确定混沌系统的控制问题。

youdao

The group relies on a network of Syria-based activists that have been tracking the number of dead, injured and missing since the Syrian conflict began in March 2011.

NPR: Syrian Regime Battles Rebels Outside Damascus

There are few experiences more thrilling than tracking and capturing a wild crocodile in the dead of night, on a river in the heart of the Central American jungle.

BBC: Tagging crocodiles in Belize