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From the Middle East the Chinese acquired a blue pigment—a purified form of cobalt oxide unobtainable at that time in China—that contained only a low level of manganese.

中国人从中东获得了一种蓝色颜料，这是一种当时在中国很难得到的纯净的氧化钴，这种颜料只含有少量的锰。

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Oxygen from the air took the place of the cobalt oxide.

空气中的氧气代替了钴氧化物。

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Both Boeing and Tesla use batteries fueled by lithium cobalt oxide, which is among the most energy-dense and flammable chemistries of lithium-ion batteries on the market.

FORBES: Is Boeing's 787 Battery Design Flawed? Ask Elon Musk

Her battery-producing viruses cover their entire 880 nanometer-lengths with tiny balls of cobalt oxide and gold, leaving her with nanowires--six nanometers in diameter and 880 nanometers long.

FORBES: Breakthroughs

The result is a stamp of the posts that under a microscope looks like a sheet of bubble wrap, each covered with layers of electrolyte and the cobalt oxide anode.

FORBES: Breakthroughs