并且对白光led特性进行分析，设计了恒流驱动电路，保证发光质量。
And this paper analyzes the characteristic of white LED, designs constant-current drive circuit, so that guaranteeing the quality of light.
这种黑物质不发光，但它远远重于银河系数以亿计的恒星，使银河系的总质量达到太阳的一至二万亿倍。
While it emits no light, this dark matter far outweighs the Milky Way's hundreds of billions of stars, giving the galaxy a total mass one to two trillion times that of the sun.
在银河系心脏位置，一个特大质量的黑洞近几年开始神秘的发光。科学家都无法确定其原因。
One supermassive black hole, at the heart of a galaxy neighboring the Milky Way, has been mysteriously brightening in recent years, and scientists aren't sure why.
然后通过和那些只计算发光天体(星系)的质量进行对比，他们就能够得出星系簇中有多少暗物质的存在了。
By comparing that calculated mass to the mass that comes from only luminous objects (the galaxies), they can determine how much dark matter is in the cluster.
研究了不同质量比的聚苯乙烯(PS)三苯基二胺(TPD)复合空穴传输层对有机电致发光器件(OLED)性能的影响。
The effect of the composite hole transporting layer with different polystyrene (PS) -triphenyl diamine (TPD) mass ratios on the performance of organic light-emitting devices (OLEDs) was investigated.
大功率半导体激光器阵列(LDA)的应用日益广泛，但受其发光机制的限制，光束质量较差。
The application of high-power laser diode arrays (LDA) is becoming wider and wider, but the quality of output beams from LDA is poor for its unique mechanism of luminescence.
防水轻触发光按键开关先后通过了ISO 9000、ISO 9001国际质量认证。
Waterproof light trigger light switches passed ISO 9000, ISO 9001 international quality certification.
这样可大幅度提高为提高发光效率设置了反射层10的半导体发光元件100的质量和生产性。
Therefore the quality and productivity of the semiconductor light-emitting device (100) having a reflecting layer (10) for improving the luminous efficiency can be significantly improved.
把计算出的质量和星系团中发光星系的总质量相比较，就能确定出星系团中存在多少暗物质。
Comparing the calculated mass and the total mass of the light-emitting galaxies in the galaxy cluster would determine the amount of dark matter that exists in the galaxy cluster.
前言：目的：研究AT P生物发光法用于肉品新鲜度检测和肉品质量评价的可行性。
Objective: To study the feasibility of meat fresh degree evaluation and meat quality estimation by ATP bioluminescence.
稳定的单泡声致发光的参数主要由振荡形状稳定性、质量扩散平衡、组分的化学平衡和高的能量集聚等条件确定。
The parameter space of a stable SBSL is mainly determined by stable shape oscillation, diffusive equilibrium of mass, chemical equilibrium of components, and high energy focusing in its interior.
光致发光谱中紫外发射峰积分强度和可见发射峰的积分强度比达到54，表明得到了较高质量的氧化锌量子点。
The ratio of the UV PL intensity to the visible PL intensity is 54, indicating the high quality of ZnO quantum dot was acquired.
开发光缆自动监测系统(OFTS)对于实施光缆网络的集中维护管理，提高其管理效率和维护质量具有重要意义。
The Optical fiber Testing System (OFTS) development is very important for maintaining and managing the fiber optic network. OFTS can greatly improve management efficiency and maintain quality.
脉冲铒YAG固体激光电源为氙灯提供能量，氙灯是激光的泵浦源，它燃烧发光激发工作物质铒YAG产生激光，因此激光电源的性能直接影响到激光光束的质量。
Power supply system provides flash energy to Xe lamp. Pumping of Er:YAG laser rod is provided by Xe lamp. Pulse solid laser power directly affects the attribute of laser.
脉冲铒YAG固体激光电源为氙灯提供能量，氙灯是激光的泵浦源，它燃烧发光激发工作物质铒YAG产生激光，因此激光电源的性能直接影响到激光光束的质量。
Power supply system provides flash energy to Xe lamp. Pumping of Er:YAG laser rod is provided by Xe lamp. Pulse solid laser power directly affects the attribute of laser.
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