Reason of invalidation failure was analyzed on expansion joint of second stage exchanger of mixture hydrogen in semi-regenerative reformer., 分析了半再生重整装置二段混氢换热器膨胀节失效破裂的原因。

78、 wǒ yào bǎ yī qiè xǐ qìng biàn chéng nǎi yóu ， suǒ yǒu zhù fú róu chéng qiǎo kè lì ， yǒng yuǎn kuài lè zuò chéng dàn gāo ...

From Donald Trump's "You're fired" catchphrase to the sound of an engine, some unusual trademark applications have been made ...