Gas flowing through the pipes burns instantly but can be kept under control easily by opening or closing the pipes.
英
美
- 通过管子的煤气会瞬间燃烧起来，但我们凭开、关管道很容易控制它。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
