音标：[ˈɔptikəl nɔiz ˈlevl] ；

光学噪声电平，光学噪声级

12. Stop the Noise p.77

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发表于:2019-01-23 / 阅读(122) / 评论(0)

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ESL Podcast 654 – Talking About Sound and Volume

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2018年CRI Tibet to have universal fibre-optical broadband service

China's Tibet Autonomous Region is about to achieve a universal coverage of fibre-optical broadband service ahead of its schedule. As China further rolled out its universal broadband project, Tibet's broadband service is looking to reach 98% of admin

发表于:2019-02-14 / 阅读(195) / 评论(0)

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A night club just opened near where you live. You are very unhappy about the situation because it disturbs the peace of the neighborhood. Write a letter to your local government official. Say who you are and explain why you are unhappy and suggest wh

发表于:2019-02-19 / 阅读(140) / 评论(0)

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A night club just opened near where you live. You are veryunhappy about the situation because it disturbs the peace ofthe neighborhood. Write a letter to your local governmentofficial. Say who you are and explain why you are unhappy andsuggest what s

发表于:2019-02-26 / 阅读(149) / 评论(0)

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bearing of the cross head pin

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