The discovery in China of what amounts to a miniature prototype of Tyrannosaurus rex calls into question theories about the dinosaur's evolution.
在中国发现的相当于小型雷克斯霸王龙原型的东西，对有关恐龙进化的理论提出了质疑。
The key of realizing the application in radar system shown in theories and tests is to carry out miniature optical terminal units which have low loss, low noise and large dynamic range.
理论分析和实验表明，制成低损耗、低噪声、大动态范围的小型化光端机是实现雷达系统应用的关键。
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