查询词典 NM

Its third-order nonlinear optical properties were investigated by using a Z-scan technique under nanosecond laser pulses at 532 nm.

应用Z-scan技术研究了该金属团簇化合物在波长为532 nm的纳秒激光脉冲作用下的三阶非线性光学特性。

The sole natural habitat and primary reservoir for NM is the human nasopharynx.

人类的鼻腔是NM唯一的天然栖息地。

The results shown the needle-shaped Mg2Si particles with length of about 2μm and width of 100 nm or several nanometers,and elliptical-shaped Al8Si6Mg3Fe intermetallic particles were observed in the cast A356-T6 aluminum alloy.

结果表明，铸造A356-T6铝合金基体中分布着约2μm长，100 nm宽，小者只有几个纳米的针状Mg2Si粒子，并且发现经T6工艺热处理后在铸造A356铝合金中存在椭圆状Al8Si6Mg3Fe金属间化合物。

It is reported in this paper that diphenylcarbazone reacts with Hg in pH 2.2 in the presence of Tween─60 to form a purple complex with its absorption maximum at 486 nm. The existence of chloride will depress the absorption of the complex. The negative absorption will be proportional to the consistence of chloride.

摘要﹞ 在pH为2.2的酸性介质中，在吐温－60溶液的存在下，Hg与二苯卡巴形成紫色的配合物，其最大吸收波长为486 nm，氯离子的存在可使原紫色配合物吸光度降低，其负吸光度与氯离子浓度成正比。

Analyses of quenched nm products revealed that the nepheline was completely transformed into NaAlSiO4 with the calcium-ferrite-type structure at 23 GPa and 1500℃ In combination with previous results, the calcium-ferrite-type NaAlSiO4 can exit under the conditions of deep lower mantle and it may be the important host phase for sodium and aluminium in the deep lower mantle. With the change of temperature and pressure, the crystal parameters will change, though the ranges are limited.

结合前人的研究成果可以认为：型NaAlSiO4在地慢深部可以稳定地存在，并对Na、Al在深部的赋存具有重要意义；随着温度压力条件的变化，CaFe2O4型NaAlSiO4的晶体学参数（晶格常数、晶胞体积和计算密度）发生变化，但变化的幅度不大。

objectiveto analyze the total content of flavonoids in nigella glandulifera preyn et sint by colorimetric method.methodsrutin was used as reference substance and the detection wavelength was 500 nm.

目的采用比色法测定维吾尔药黑种草子中总黄酮的含量。方法以芦丁作对照品，以亚硝酸钠-硝酸铝-氢氧化钠体系为显色剂，检测波长为500 nm。

Details of the measurement method and of the related calibration techniques are reported. Results of the normal spectral emissivity of niobium at 633, 753, 827, and 905 nm from room temperature to its melting point are presented.

文中详细介绍了测量方法和测量装置的各组成部分及其工作原理，给出了利用该方法测得的铌在633，753，827和905nm波长下的法向光谱发射率结果，测量不确定度在5%以内。

Therefore, NLM and NCM both showed higher activity and selectivity than the Ni/MgO catalyst NM.

所得催化剂NLM、NCM具有较大比表面和较小镍晶粒度，以NCM中镍物种的还原性能改善尤为明显。

They are produced with the application of standards 56- nm technical process.

他们的生产与应用的标准56 -纳米技术的进程。

The results showed that the average particle size of complex was about 30 nm.

结果表明：产物的平均粒径约为30 nm。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。