查询词典 nm.

Then find out that ethyl ether can absorb the UV-light, the wavelength of that is lower than 304 nm, and can produce strong fluorescence.

发现，乙醚能吸收波长小于304 nm的紫外光，产生强的荧光；乙醚的荧光峰是波长306 nm至345 nm范围的宽谱峰，峰值波长在317 nm左右。

The second experiment is to fabricate white light LED from red and green phosphors pumped by blue light LED. The blue light LED we used in our experiment has the wavelength range between 450 and 452.5 nm, and the chip size is 17 mil *14 mil. There are two kinds white light LED we fabricated in the experiment. There are three blue light LED chips bonded in single package of both kinds package. The different of the both packages is mixed phosphor of encapsulation. One of the experimental devices was encapsulated YAG phosphor mixed silicone to fabricate white light. The other is red and green phosphor mixed encapsulation. The compared and focused parameter was luminous efficiency. YAG phosphor pumped white light has the luminous efficiency 72 lm/W, CRI 70, CIE(0.32, 0.33), CCT 5622°K at the operating current 60mA. On another hand, red and green phosphor pumped white light LED has the luminous efficiency 55 lm/W, CRI 90, CIE(0.31, 0.32), CCT 6479°K at the operating current 60mA. We fabricated the red and green phosphor pumped white light LED, and proved that it could has much higher CRI under similar compared conditions, CIE xy and CCT.

第二个实验是使用蓝光LED晶粒来制作白光元件，蓝光LED晶粒波段范围在450 ~ 452.5 nm，晶粒大小为17*14 mil，以三颗蓝光LED晶粒搭配YAG萤光粉(黄绿光 540 nm)制成白光元件，再以另外三颗蓝光LED晶粒搭配红色萤光粉(613 nm)混合绿色萤光粉(519 nm)制成的白光元件进行发光效率比较；搭配YAG萤光粉的白光元件在注入60 mA的电流时所量测到最大的发光效率是在72 lm/W，演色性数值大约为70，CIE色度座标为(0.32， 0.33)，色温是在5622 °K；而搭配红色萤光粉混合绿色萤光粉的白光元件在注入60 mA的电流时，最大的发光效率在55 lm/W，演色性数值大约为90，CIE色度座标为(0.31， 0.32)，色温在6479 °K；证明了蓝光LED晶粒搭配红色萤光粉混合绿色萤光的白光元件演色性指数可以高达90 以上的结果。

This paper introduces and investigates the filter theory of pseudo NM algebra. The notions of filters, generated filters, normal filters and prime filters etc. are defined. Their basic properties are investigated, with the structures of generated filters obtained. We show that prime filters and irreducible filters are equivalent, and that maximum filters must be prime filters. The prime filter theorem of pseudo NM algebra and its some corollaries are established.

引入了伪NM代数的滤子理论，定义了滤子、生成滤子、正规滤子和素滤子等概念，研究了它们的特征性质，给出了生成滤子的结构，证明了在伪NM代数中素滤子与不可约滤子等价以及极大滤子必是素滤子，建立了伪NM代数的素滤子定理及其推论。

As barbituric acid and riboflavin was respectively added into PC/4 coliposomal solution, the absorbivity of barbituric acid at 258 nm, and riboflavin at 222 nm and 264 nm decreased slowly with time. The onset of a hypochromic effect can be ascribed to adeninebarbituric acid or riboflavin interaction.

紫外可见光谱研究表明，底物巴比妥酸在258 nm的吸收峰，核黄素在222 am，264 nm的吸收峰随时间的延长而逐渐降低，这种减色作用归因于脂质体内的巴比妥酸和核黄素在亲脂区分别与双亲化合物上的腺嘌呤形成了氢键。

The change of apple florescence spectral features and the target information of apple flower/leaf and apple flower/tree present a good correlation, and it indicates that the sensitive wave band range is 400-530 nm cyan light, 570-700 nm orange-red light, and the 760-1350 nm nearly infrared of medium flower/tree of apple trees.

其光谱特征变化与花叶比和花树比指标呈现较好的相关性，敏感波段范围为400~530 nm的蓝青光和570~700 nm的橙红光，以及中等花树比果树760~1 350 nm的近红外。

Under stimulation of glutamic acid, [Ca2+]i in soma increased from 100 nM to 1 μM, and [Ca2+]i in spines increased from 50 nM to 300 nM. These results prove that monitoring calcium concentration in spine with Cameleon is feasible.

吹加谷氨酸来研究了神经元的胞体和树突棘的钙动力学，在100 μM 的谷氨酸的刺激下胞体内钙离子浓度从100 nM 上升到1 μM 左右，而树突棘内钙离子浓度从50 nM 上升达到500 nM。

Nanostructured ZnO films with grain size of 28～35 nm have been prepared on quartz glass substrates by pulse laser ablation of Zn target in oxygen atmosphere. The structural and optical properties of the films were studied. ZnO thin films with typical c-axis (002) orientation were successfully deposited at a range of 100～250 ℃. The results obtained by X-ray diffraction and photoluminescence measurements show that the strong UV emission centering is about 378～385 nm and deep-level emission centering about 518～558 nm in the room temperature PL spectra of the ZnO films.

利用脉冲激光沉积法在氧气氛中烧蚀锌靶制备了纳米晶氧化锌薄膜，衬底为石英玻璃，晶粒尺寸约为28～35 nm.X射线衍射结果和光致发光光谱的测量表明，当衬底温度在100～250 ℃范围内时，所获得的ZnO薄膜具有c轴的择优取向，所有样品的强紫外发射中心均在378～385 nm范围内，深能级发射中心约518～558 nm，衬底温度为200 ℃时，得到了单一的紫外光发射。

Design of 1064 nm, 532 nm, 355 nm Frequency-Tripled Antireflection Coating for LBO

三硼酸锂晶体上1064 nm， 532 nm， 355 nm三倍频增透膜的设计

It is shown that it is difficulty to differentiate each vegetation type among sub-tropical evergreen forest, sub-tropical coniferous forest and sub-tropical deciduous forest because of the mixture of their tree spectra. According to the reflection index in the wavelengths of 750 nm to 1 100 nm, the tree species can be divided into 4 groups with descend in reflectivity. Each tree specie can be differentiated from each other according to its slope of the spectrum curve and its reflection index in the wavelengths of 770 nm to 1 010 nm for each forest vegetation type. The unique first order derivative feature can be used to identify litsea, alder, fir, red birch, southwest birch, large schima confertiflora, taiwania flousian and small leaf schima confertiflora.

研究表明：亚热带常绿阔叶林、亚热带针叶林和亚热带落叶阔叶林等植被类型，因其树种间光谱特征混淆严重，而难以彼此区分；根据其反射率在750~1 100 nm范围上的差异，可将其归为4类；就各植被类型而言，其树种间在光谱曲线坡度，以及在770~1 010 nm范围上具有显著差异，可据此将其区分；木姜子、桤木、杉木、红桦、大叶木荷、秃杉和小叶木荷等因具有独特的光谱一阶导数特征，据此可以识别提取。

In the same experimental condition, three 5-at% Yb3+-doped crystals were tuned using one fused quartz. The range of their tunable wavelengths are 70 nm,66 nm and 74 nm, respectively.

三块掺杂率均为5%的Yb3+激光晶体Yb：LSO、Yb：GSO和Yb：GYSO在完全相同的实验条件下由同一块熔融石英棱镜实现了可调谐激光的输出，调谐范围分别为70 nm、66 nm和74 nm。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷