But e-bikes containing lithium-ion batteries are a newer challenge. "When a battery fails, it doesn't necessarily ignite, it will often produce some off-gases," says Stephen Welch, senior lecturer at the University of Edinburgh's Fire Research Centre. "Those off-gases are toxic and flammable. If they accumulate, you can have an explosion risk."
Фото: Пресс-служба научного центра вирусологии и биотехнологий "Вектор" / РИА Новости
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“就像同时将二维画面在黄鹤楼上画了4遍。”韦宇翔介绍，这种“三拼四叠”的融合技术，让光影秀构建出的画面更有立体感。
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