表芯里面的微处理器保证了传送带运行精准，聚碳酸酯水晶保护着电机免受短于50口径的子弹袭击。

A microprocessor ensures the belts are always on time, while the polycarbonate crystal display protects the mechanics from anything short of a.50-caliber bullet.

youdao

因此，研究者们转而使用两层含石墨的导电性聚碳酸酯，各层的内外层都附有一条金属带。

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

youdao

结果表明，油井无机结垢类型主要是碳酸钙垢，结垢最严重区域为油井井底及近井带，与实际情况基本吻合。

The results show inorganic scale is calcium carbonate and scale in down hole and well bore area is the most severe. It agrees with practical situation basically.

youdao