The density of air anion has become one of the important indexes that measure the sanitation degree of the air.
空气离子浓度也是衡量空气清洁度的重要指标之一。
Its construction is very light and serves to underscore the thickness and density of air, capable of holding suspended plastic sheeting.
其结构非常轻，可用来突出空气的厚度和密度，能够保持塑料薄膜的悬浮状态。在它们之下，气化形成了一种更致密、更新鲜的空气。
Every 1000 metres increase in altitude reduces atmospheric pressure - and hence the density of the air - by about 11 per cent (though the precise formula is more complicated than this).
海拔每上升1000米大气压力- - -也就是空气密度- - -会降低大概11%(虽然精确的公式比这要更复杂。)
The key to this is the reduced density of the atmosphere, which affects how fast the ball moves through the air and also the bend of a spinning ball.
此处的关键在于大气的折合密度，它会影响球在空中穿越的速度以及旋转球的弯曲度。
In Johannesburg, the exact same shot would either fly over the crossbar or hit the wall, as the lower air density reduces both drag and the effect of spin.
在约翰内斯堡，完全相同的射击既可能比球门飞得高也可能撞到人墙，因为更低的空气密度既降低了拖曳力也降低了旋转效应。
Dynamic pressure is a function of velocity and air density, which in turn is dependant upon altitude and temperature.
动态压力是一个功能的速度和空气密度，而这又是取决于海拔高度和温度。
A distribution of air pressure and the mass of a given volume of air such that the air density is not a function only of atmospheric pressure.
一种气压的分布情况，其中给定体积内的空气质量，即空气的密度，不仅仅是气压的函数。
The same period, the ocean thermal slow, relatively high temperature, air density changes smaller solipsism relative area of low pressure.
同一时期，海洋散热较慢，温度相对地较高，空气密度变化较小，遂形成相对的低压区。
Establishes a dynamic lumped parameter model for air cooled heat pump under frosting condition. Divides frosting course into accumulation of density and frost thickness.
建立了结霜工况下空气源热泵集中动态参数模型，将结霜过程分解成密度项的累计和霜层厚度项的累计。
We also assemble a set of permeability testing equipment, by which we study on the effect of density, thickness and air pressure on the relative permeability.
并利用自行组装的测试设备研究了柔性石墨板密度、厚度以及空气压力差对相对透气系数的影响。
With increase of bed height, air pressure and power consumption rise, expansion ratio of the bed decreases, but the density stability and critical fluidized velocity of the bed are hardly changed.
随着床层高度的增加，所需风压及功率增大，膨胀率有所降低，而床层密度的稳定性和起始流化气速几乎不变。
If breathing carbon dioxide seems uninviting, the density of the air will appear worse.
如果说呼吸二氧化碳令人生厌的话，那么空气的密度就显得更为糟糕。
It was shown that wet bulb temperature and altitude could do effect on the air density which influence the performance of room air conditioner according with the other equation.
结合相关公式分析了在一定条件下空气密度对空调性能产生重要影响，而湿球温度和海拔高度是影响空气密度的主要原因。
In physical and mechanical indexes, the basic density, air-dried density, compression strength parallel to grain, MOR, MOE and toughness of mature wood are higher than that of juvenile wood.
在物理力学性质指标中成熟材的基本密度、气干密度、顺纹抗压强度、抗弯强度、抗弯弹性模量及冲击韧性高于幼龄材；
There exists a heat transfer mechanism of air convection in the range of bulk density of high loft nonwoven fabrics.
在高膨松性非织造布的体积密度范围内，有空气对流传热机理存在。
After computing work, property tables of wet air were done based on equations of wet air properties included pressure, specific enthalpy, relative humidity, density and so on.
根据湿空气有关压力、焓、相对湿度、密度等状态参数计算公式，经过计算获得直观的湿空气性能参数表。
A distribution of air pressure and the mass of a given volume of air such that the air density is a function of only atmospheric pressure.
气压的-种分布情况，给定体积内空气质量，即空气的密度，仅仅是气压的函数。
Kind of measurement Net or gross calorific value, Wobbe index, Density and minimum air requirement.
测量种类净热值或总热值，华白指数，密度，最少空气需要量。
In terms of density, the voyage from interplanetary to intergalactic space is more drastic than going from water into air.
以密度来说，从行星际到星系际空间的旅行，比从水进入空气中还激烈。
A common desert phenomenon is the mirage, an optical illusion caused when lights waves are bent or refracted by layers of air that are different in density.
海市蜃楼是沙漠里一种常见现象。它是光波在遇到不同密度的空气层而发生折射时引起的一种光幻象。
Thus the averaged relationships between the flux density of the direct solar radiation and the air mass under various coefficients of transparency P2 were obtained.
于是得到各种透明系数P_2状况下太阳直接辐射通量密度随大气质量变化的平均关系。
So, instead of having the periodic variation of water, or the periodic variation of air density here we're talking about an electric field.
不像水或者空气密度的，周期变化，我们这里，讨论的是电场。
The adoption of hybrid magnetic circuit structure in permanent magnet motors can effectively increase air gap flux density.
永磁电机中采用混合式磁路结构能有效地提高气隙磁通密度。
Using the moire - schlieren method symmetric and asymmetric flow fields density distributions of underexpended free jets of air from circular and square nozzles have been measured.
本文应用莫尔条纹法测出了从图形和方形喷嘴里吹出的不完全膨胀气流的密度分布。
Meanwhile, there were not significant differences in wood air dry density, mechanical strength and cell wall percentage of intra provenance.
种源内木材气干密度、力学强度及胞壁率差异不显著，管胞长、宽和壁厚的差异均显著且高于种源间的差异。
Meanwhile, there were not significant differences in wood air dry density, mechanical strength and cell wall percentage of intra provenance.
种源内木材气干密度、力学强度及胞壁率差异不显著，管胞长、宽和壁厚的差异均显著且高于种源间的差异。
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