normal atmospheric pressure
- normal atmospheric pressure的基本解释
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标准大气压力
- 更多网络例句与normal atmospheric pressure相关的网络例句 [注:此内容来源于网络,仅供参考]
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The inner pressure was changed to 2 kPa and 4 kPa below normal atmospheric pressure in 50 s and recovered to the normal pressure, the pure tune hearing threshold of 500, 1 000 and 2 000 Hz and tympanic pressure were measured, and acoustic impedance curve characteristic and tympanic membrane appearance were recorded at each time points.
结果当大气压低于正常值2kPa时,受试者言语频率的纯音听阈显著提高(均P〈0.01),鼓室压力值发生显著改变(P〈0.05);当大气压低于正常值4kPa时,受试者500、2000Hz的纯音听阈显著提高(P〈0.01和P〈0.05),鼓室压力值发生显著改变(P〈0.01)。
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MethodsTwenty volunteers with normal hearing level and tympanic pressure were enrolled and kept at airtight container. The inner pressure was changed to 2 kPa and 4 kPa below normal atmospheric pressure in 50 s and recovered to the normal pressure, the pure tune hearing threshold of 500, 1 000 and 2 000 Hz and tympanic pressure were measured, and acoustic impedance curve characteristic and tympanic membrane appearance were recorded at each time points.
方法选取听力和鼓室压力正常的受试者20例,即单耳40耳,评估其于50s改变密闭模拟电梯容器压力低于正常大气压2kPa、50s改变密闭容器压力低于正常大气压4kPa、以及压力恢复至正常水平时,言语频率500、1000、2000Hz的纯音听阈,鼓室压值和声阻抗曲线图形形态,以及鼓膜形态。
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Experts from meteorological department pointed out that the reason why it snowed at that time is that the atmospheric pressure above the area dropped suddenly to 950 millibars. It was 20 millibars lower than the limit of the normal atmospheric pressure. In June, 2000, the temperature in Koppaonike City, a small town in the plain of Yugoslavia, was over 15 degrees centigrade all along. But in midday of June 17 it dropped suddenly to zero or below. Then a heavy snow fell on. This surprised the local residents. People went to street one after another to have a look.
气象部门指出,当时出现雷电的原因是当地上空气压骤降至950毫巴,比正常气压极限低了20毫巴。2000年6月,南斯拉夫平原小城科帕奥尼克的温度一直在15摄氏度以上,但17日中午,小城的温度骤降到摄氏零度以下,接着天空就飘起了大片的雪花,这一情景让当地的居民惊奇不已,纷纷上街观看。
- 更多网络解释与normal atmospheric pressure相关的网络解释 [注:此内容来源于网络,仅供参考]
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atomize:使雾化
at normal atmospheric pressure 在标准大气压下 | atomize 使雾化 | attached in-line emitter 在制作过程中胶合或焊接在滴灌带(或软管)上的内置式喷头(滴头)