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！
Hydrogen is added to the air mixture, causing it to burn easily and powerfully while the oxygen increases the octane value of the fuel.
氢气被添加到混合空气中，可使其既容易又很强力燃烧，而氧气会增加燃油的辛烷值。
Significant deviations have occurred between our hydrogen value and the market value when the hydrogen demand is very brisk and price is rising at the petrochemical market.
在石化市场需求旺盛，价格上涨之时，我们的氢气价值和市场价值发生了很大的偏离。
Hydrogen can replace acetylene, gas, liquefied petroleum gases such as carbon, with high calorific value, flame concentration, zero pollution, high efficiency, energy saving and easy.
氢气可以取代乙炔、煤气、液化气等含碳气体，具有热值高、火焰集中、零污染，生产效率高，节能方便等优点。
Variations of the process enable production of high purity hydrogen, methanol, ammonia, methane or low heating value gas.
此过程的演变工艺可以生产高纯度氢气、甲醇、氨、甲烷或低热值气体。
The average value of hydrogen diffusion coefficient in metal hydride(MH) electrode was measured by constant current discharge method.
利用恒流放电法测定了金属氢化物（MH）电极中氢原子扩散系数的平均值。
It also introduces the concept of the minimal energy units in the metabolism, revises theoretic partial hydrogen pressure, gains its suitable scope and the optimal value.
进而引入细胞代谢最小能量子概念，对理论氢分压进行修正，得出沼气发酵适宜的理论氢分压范围和最佳氢分压。
Some factors which had influence on the epoxy value of product, such as the amounts of formic acid and hydrogen peroxide, drip feed speed, catalyst, reaction temperature, reaction time were discussed.
讨论了甲酸用量、双氧水用量及滴加速度、催化剂用量、反应温度、反应时间等对产物环氧值的影响。
Through the case study on a refinery, the new distribution network reduces by 21.21% of hydrogen consumption. The minimum value is realized.
改造后，可使氢网络对新氢消耗量达到最小，比现行氢网络少消耗21.21%的新氢。
The response of the sensor to hydrogen is measured. The analytical value is close to the experimental result.
通过实验研究了该传感器的氢响应特性，理论模型预测的氢气浓度与实验结果吻合。
According to the removing rate on algae and cost value or so, the sequence of four algaecides from good to bad were potassium permanganate, copper sulfate, hydrogen peroxide and sodium hypochlorite.
通过杀藻效果、经济性以及安全性等方面的综合比较，对于以有毒蓝藻为优势藻属的引滦水，四种杀藻剂的优劣程度从优到劣排序为：高锰酸钾＞硫酸铜＞过氧化氢＞次氯酸钠；
The permittivity increased with increasing hydrogen charging time and then started to decrease after reaching a maximum value.
介电常数随原子氢处理时间延长而逐渐增加，达到一个极大值后，又出现下降。
The permittivity increased with increasing hydrogen charging time and then started to decrease after reaching a maximum value.
介电常数随原子氢处理时间延长而逐渐增加，达到一个极大值后，又出现下降。
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