正常大气压

According to the observation experiment at the Jiufeng station where there is smaller environment noise, the conclusions are drawn as follows.In the normal atmosphere, the observed value is about 500×10-5ms-2, which is greater than theoretical value about 30×10-5ms-2, and if in the low vacuum, the observational error about 2.3×10-5ms-2 is generated. The vacuum maintaining system in falling room can not work normally, which will yield 0.1~4.1×10-5ms-2 error to the gravimetric observation. In the case of that the measurement is in the stable geological conditions and the smaller environment noise, the action of vibration isolating spring is not obvious, but it yields greater effects on measurement accuracy.

通过在环境干扰较小的九峰站观测实验，得到如下结论：在正常大气压状态下所观测到的空气阻力影响约500×10-5ms-2，比理论估算值大近30×10-5ms-2，若在低真空状态测量空气阻力也将产生2.3×10-5ms-2观测误差；落体室真空度维持系统工作不正常，空气阻力也将对重力观测造成0.1~4.1×10-5ms-2的观测误差；在地质条件比较稳定，环境震动干扰较小的基墩上测量，隔震弹簧的作用对观测结果影响不明显，但对测量精度影响较大。

Of the test sample should be the standard test in the normal atmospheric pressure for installation and test equipment as installed in the Central.

试验样品应该在正常试验的标准大气压下进行安装，并且尽可能安装在试验设备中央。

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。

The Veliger larvae of Crassostrea gigas swan regularly in the water column under the ambient pressure, either in a vertically orientated lineal or spiral pathway.

在正常大气压下，太平洋牡蛎面盘幼虫的游泳较为舒缓，压力提高时，表现为快速的直线运动或螺径小而螺距大的螺旋运动，并出现更频繁的下沉行为，表明幼虫的紧张度已提高。

Clean area was in normal pressure state. semi-contamination and contamination area were in specific underpressure state, about –10pa and –30pa respectively.

通过对送风和排风的严格控制，清洁区为正常大气压区，半污染区为负压区（约-10pa ），污染区为更小的负压区（约-30pa ）。

Dry ice, at a temperature of -109.3oF (-78.5 oC) at atmospheric pressure, sublimes (transforms directly from solid into vapor without the formation of a liquid).

干冰，在正常大气压下，温度为-109.2℉（即-78.5℃）时升华（即固态直接转变为气态，不经过液态的变化）。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。