These films can be used to make a new type of loudspeaker that works by heating and cooling the air, rather than bouncing up and down to vibrate the air directly.
这样制成的薄膜可以被用来制造一种新型扩音器，这种扩音器通过加热和冷却空气工作，而不再是直接通过往复运动使空气产生振动效果。
Make up, perfume and skincare products used after the expiry date carry a risk of irritation and infection, Debenhams said. This is due to air and bacteria infiltrating the products.
由于空气和细菌渗透原因，化妆品、香水和护肤品在截止日期后使用会有带有刺激性和感染的风险，德本汉姆公司说。
And lately I've been cracking up because Kait Shared how her grandmother used to spray Windex in the air to make it smell like she had cleaned! (it fooled her Grandpa every time.)
最近凯伊特的一则分享彻底打败我了……她说她姥姥以前总是在房间里喷清洁剂，用清洁剂的气味来制造她打扫过房间的“假象”，而且她姥爷每次被骗倒。
应用推荐