查询词典 spontaneous emission

Explanation: This close-up view shows a portion of otherwise faint emission nebula IC 410 in striking false-colors.

说明：这张特写假色照片中显示了IC410昏暗发散星云的一部分。

When the main gap being closed at interval of a certain time, three pulses were obtained on the field-emission diode, the peak power of each pulse was over 20 GW, pulse duration about 80 ns, and pulse interval about 15 ms.

在场发射二极管上获得3个峰值功率大于20 GW，半高脉宽约60 ns，脉冲间隔约15 ms，电压约400 kV的高功率电脉冲。

Such analysis shows that:(1) Some OH masers are confirmed of their radiative pumping mechanism while some other OH masers might be pumped by other mechanisms, and for another set of OH masers whose radiative pumping lines which is expected by our estimation based on modeling work are not detected, which may be due to other reasons such as clumpy OH shell and limb filling emission effect.

这些分析结果显示：(1)除了一些OH／IR源的OH 1612MHz脉泽可能确实是由红外辐射抽运的外，另有一些OH／IR源可能是由其它抽运机制抽运的，还有一些OH／IR源，可能是由于诸如OH脉泽壳层分布不均匀或OH脉泽壳层填充发射等原因，其光谱中的这两条红外吸收线按照模型估计本应该被探测到而实际上却没有探测到。

Evaluation index of industrial water pollution are defined based on industrial wastewater emission standards and the emphasis of water control, according to industrial water pollution emissions data of 31 provinces in China impact of water pollution is calculated by the improved entropy method, lead, cyanide and ammonia nitrogen are in the top three on the impact of water pollution, water pollutant index are divided into heavy metals index and composite index by variable cluster.

根据我国工业各行业的排放标准和水污染控制重点，确定了我国工业水污染状况评价指标，采用改进熵权法对我国31个省区工业水污染物的排放数据进行计算，得到工业废水中铅、氰化物、氮氨对水污染影响居于前三位，应用变量聚类将水污染物分成重金属指标和复合指标，通过熵值对全国各地区工业水污染总体状况、重金属指标、复合指标进行排序，得到东部、中部地区是我国工业水污染较严重地区，但两个地区工业水污染原因有较大区别。

Emission of NOx from coal combustion in power plant is worse.

电厂煤粉锅炉燃煤过程产生的氮氧化物对环境的污染非常严重。

The characterof gas emission and the degree of coalification are relative to the breakdown strength ofcoal-bed.

淮北宿东矿区和淮南谢二矿的某些煤层受到过强烈的后生构造破坏，煤体的破碎强度与矿井瓦斯及煤的煤化程度的加深存在正相互关系。

Based on the quasi-dimension combustion model, the emission model is set up in this dissertation. The NO emissions in different conditions of LPG engine can be simulated and calculated by the model. The calculated results show that the NO emissions are larger influenced by ignition timing and less influenced by compression ratio, finally, choosing a right coefficient of excess air will have great effect to reduce NO emissions.

本文在建立的准维燃烧模型基础上建立了排放生成模型，利用该模型对液化石油气发动机在变参数情况下NO的排放生成情况进行了模拟计算，计算结果表明点火提前角对NO的生成影响较大，压缩比对NO的生成影响较小，而选择合适的过量空气系数更是对降低NO的生成起着关键作用。

Its emission density is measured with the five-gas analysis apparatus.It is found find out coefficient of excess air and its characteristics with loads changing,ignition timing and ...

得出了使用五气分析仪能定量地对小型通用汽油机进行排放试验研究和生产质量控制，过量空气系数及随负荷变化的过量空气系数特性、点火正时及标定转速不同是影响小型通用汽油机整机排放的主要因素的结论，给出了188F通用汽油机达到美国和欧盟现阶段排放限值同时能优化汽油机动力性、经济性和工作稳定性等综合性能的措施。

Non-road spark-ignition small engines ; emission ; coefficient of excess air ; ignition timing

小型通用汽油机；排放；过量空气系数；点火正时

In chapter 4, we study the sticking coefficient for the re-emission model.

在第四章，我们研究了re-emission 模型中的吸附系数。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。