单词：constant temperature humidity chamber
单词：constant temperature humidity chamber 相关文章
This is the VOA Special English Development Report. Before refrigerators, homes usually had ice boxes. But another way to keep food cool without the need for electricity is to use an evaporative cooler. This is easy to make and does not even use ice.
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Daniel: Hey how are you? Valeria: Fine and you? Daniel: Fine thanks. I have a topic for you. Valeria: OK. Daniel: I think it's a really, what do you think of the weather? Do you like this kind of like really changing weather, thunderstorms. Valeria:
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Listen to the dialogues and check the items they have talked about. 英语对话1 A:Jenny, could you read tomorrow's weather report for me? B:What's it about? A:l'd like to know the wind and weather conditions. B:Why? A:Because Tom and I are going fi
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