The eustachian tubes connect the middle ears to the pharynx, allowing air pressure on the eardrum to be equalized.
咽鼓管将中耳连接到咽上，可调节作用在鼓膜上的气压。
The pressure equalized rain-screen (PER) walls were exactly proposed in this context.
等压雨幕墙正是在这一背景下诞生的。
The pressure equalized rain-screen (PER) walls were exactly proposed in this context.
等压雨幕墙正是在这一背景下诞生的。
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