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- The change of emission spectra in Y_2O_2S:Sm~(3+),Mg~(2+),Ti~(4+)and Y_2O_2S:Tb~(3+),Mg~(2+),Ti~(4+) were studied though altering the concentration of activator. 通过改变掺杂激活剂离子的含量,分析了合成样品Y_2O_2S:Sm~(3+),Mg~(2+),Ti~(4+)和Y_2O_2S:Tb~(3+),Mg~(2+),Ti~(4+)中发射光谱的变化。
- The amount or rate of emission or ejection. 排放量流量、流速,或排出量,排出的速度
- There is a concentration of people in big cities. 大城市人口集中。
- Modulation and control of emission. 放射调变与控制。
- A lumen is a measure of the rate of emission of light energy. 流明是光能放射率的量度单位。
- What is the concentration of salt in sea water? 海水中盐的含量是多少?
- Determination of Emission Concentration of Catering Oil Smoke Pollution by UV Spectrophotometer 紫外分光光度法测定饮食业油烟污染物的排放浓度
- S is the concentration of unpaired nucleotides. S是不配对的核苷酸的浓度。
- The concentration of ethylene is on the high side. 乙烯浓度偏高。
- L-1 was the optimal spraying concentration of. L-1为最佳喷施浓度。
- Q: Does the testing need concentration of the mind? 问:测试时需要集中精神吗?
- They strongly recommended concentration of offer. 他们极力建议集中报盘。
- The exercises demand great concentration of mind. 这种练习要求全神贯注。
- Having a high concentration of acid. 酸性的含高浓度酸的
- It is the natural frequency of emission of the hydrogen atoms in space . 这是空间氢原子“释放”的自然频率。
- Ethanol concentration was determined by using the ECB at 350 nm of excited wavelength and at 459 nm of emission wavelength. 在激发波长350nm、发射波长459nm条件下,用ECB成功地对酒中的乙醇进行了测定;
- It is the natural frequency of emission of the hydrogen atoms in space. 这是空间氢原子“释放”的自然频率。
- Low concentration of CDCA does not damage the liver function. 低浓度 CDCA不损害肝功能。
- This burst had a 135 second long, broad peak of emission in gamma rays. 这一爆发具有一个长达135秒的伽马射线峰值。
- Freckles are simply concentrations of melanin. 雀斑不过是高浓度的黑色素。