天线内层是窄带隙的纳米管，与此相反，外层的纳米管则具有较宽的带隙。

The inner layer of the antenna contains nanotubes with a small bandgap, and nanotubes in the outer layer have a higher bandgap.

youdao

所以研究人员用了两层石墨含量较高的传导性塑料，每层塑料内外层的侧面都有一条金属带。

Instead the researchers use two layers of graphite-rich conductive plastic, each flanked by a single metal strip in the inner and outer cladding.

youdao

一氧化碳有很简单且独特的最外层轨道结构，两个并列的叶形从尖端的末梢伸出，一个带正相而另一个是负相。

Carbon monoxide has a simple but distinctive outermost orbital structure with two side-by-side lobes sticking out from the end of the tip, one with a positive phase and the other a negative phase.

youdao