The value of the critical density is very small: it corresponds to roughly 6 hydrogen atoms per cubic meter, an astonishingly good vacuum by terrestrial standards!
临界密度的值非常小：它相当于每立方米约6个氢原子，从地球上的标准来看这简直是真空！
Up near the jet stream above New York, the wind power density can reach 16 kilowatts per square meter.
在纽约上空的射流层（对流层顶）附近，风能密度可达16千瓦每平方米。
The best ground-based sites have a wind-power density of about a kilometer per square meter of area swept.
最棒的地面站风能密度约为一公里/平方米扫风面积。
Notice that the density of the syrup in terms of kilograms per cubic meter - is very close to C2 — I mentioned that earlier.
注意，糖浆的密度，是每立方米1千克，和C2的数值很接近-，我刚才提到了。
These steel ball bearings have a density of about 7,800 kilograms per cubic meter.
这些钢珠的密度是，每立方米7800千克。
The study found that the Mongolian capital Ulan Bator had an annual average PM10s density of 279 micrograms per cubic meter, followed by another west Iranian city, Sanandaj, with 254 micrograms.
研究发现，蒙古首都乌兰巴托年均可吸入颗粒物浓度为每立方米279微克，其后是又一个伊朗西部城市，萨南达杰，浓度为每立方米254微克。
Their standard model treats the universe as though its density did not vary from place to place but had a uniform, average value of one atom per cubic meter.
标准模型将宇宙视为一个均匀结构，密度不会随著空间位置而变化，每立方公尺平均有一个原子。
The spatial distribution of the flux density is investigated by the CCD method and calibrated by heat flow meter.
采用CCD法得到了能流密度的相对分布并用热流计标定出能流密度分布。
Based on the calculation and finite element analysis of resonator, a new kind of resonant liquid density meter is designed.
在对圆筒谐振子的数学模型计算和有限元分析的基础上，设计了一种新型的谐振式液体密度传感器。
The results of density test indicated the reasonable density of Handeliodendron bodinieri annual seedlings were 60 per square meter.
对掌叶木进行密度试验的结果表明，掌叶木育苗的合理密度为60株。
Statistics showed that the time-effect models are parabola functions with maximum values when the mussel population density ranges from 6.25 to 31.25 per cubic meter.
研究发现，当蚌密度在每立方米6.25个到每立方米31.25个的区间内，时效模型呈具有极大值的抛物线函数。
The relation between DD density meter method and natural stacking method for determining filling value of cut stem was discussed .
对DD密度计法和自然堆积法两种测试膨胀梗丝填充值的方法进行了实验分析对比。
However, the density and number of flowering tillers per square meter for Spartina alterniflora were significantly lower than those of Scirpus mariqueter.
海三棱藨草的密度和单位面积结实枝条数显著大于互花米草。
A unit of magnetic flux density equal to one weber per square meter.
磁通量密度单位等于每平方米韦伯。
The production quantity meter for dredger consists of a density gauge, an electromagnetic flowmeter interface and a specific micro-computer based on Z80.
挖泥船产量计是由密度计、电磁流量计接口和专用微机（Z80）组成。
This paper presented a new non-contact method to meter co concentration and smoke optical density simultaneously and online based on photoacoustic technology.
本文提出一种利用光声技术同时在线测量CO浓度和烟雾消光的非接触式方法。
This paper describes the design of a kind nuclear gauge union function instructional meter, for experiments with three types of nuclear gauge-including level gauge, density gauge and thickness gauge.
提出了针对实验室核子计（包括料位计、密度计、厚度计）实验的核子计联合功能教学仪设计方案，阐述分为硬件设计和软件设计两部分。
The model MT5022 nuclear density and moisture gauge is a mobile meter for continuous inspection and control of the compactness of …
MT5022型移动式核子密度含水量测定仪比便携式核子密度计具有更高的检测效率和控制功能。
The model MT5022 nuclear density and moisture gauge is a mobile meter for continuous inspection and control of the compactness of a highway and pavement foundation. I…
MT5022型移动式核子密度含水量测定仪比便携式核子密度计具有更高的检测效率和控制功能。
The model MT5022 nuclear density and moisture gauge is a mobile meter for continuous inspection and control of the compactness of a highway and pavement foundation. It can...
MT 5022型移动式核子密度含水量测定仪比便携式核子密度计具有更高的检测效率和控制功能。
The model MT5022 nuclear density and moisture gauge is a mobile meter for continuous inspection and control of the compactness of a highway and pavement foundation. It can be installed...
MT 5022型移动式核子密度含水量测定仪比便携式核子密度计具有更高的检测效率和控制功能。
The principle, structure of the NBT-1 model of density adjusting unit were introduced. It can form a complete set with the density testing meter to control the density of the paper pulp.
介绍NBT 1型浓度调节器的结构、原理，该调节器与浓度变送器配套，可以控制纸浆的浓度。
The principle, structure of the NBT-1 model of density adjusting unit were introduced. It can form a complete set with the density testing meter to control the density of the paper pulp.
介绍NBT 1型浓度调节器的结构、原理，该调节器与浓度变送器配套，可以控制纸浆的浓度。
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