查询词典 NM

Micrometer-sized m esoporous silica spheres (1.5～4 μm) with smooth surfaces, which have an avera ge pore size of 3 2 nm and a BET surface area of 972 m 2/g, can be prepared at 1∶1 weight ratio between EO 20 PO 70 EO 20 and CTAB.

在EO20PO70EO20与CTAB质量比为1：1时可得到形貌完好、表面光滑的介孔氧化硅微米球(1.5～4μm)，其平均孔径为3.2 nm，比表面积为972m2/g。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The results show that nbutanol azeotropic distillation can effectively prevent the formation of hard agglomerates in drying process,and good dispersed spherical nanopowders can be obtained,with an average size of 50 nm.

结果表明，用正丁醇共沸蒸馏能有效地防止干燥过程中颗粒间的硬团聚，获得分散性良好的粉体，其平均粒径约为50 nm，形貌为球形。

In vivo chlorophyll fluorescence excitation spectra at 675 nm emission wavelength of six phytoplankton species belonging to dinophyta and bacillariophyta were studied.

研究了甲藻和硅藻两个门类的六种浮游植物在发射波长为675 nm处的活体叶绿素荧光激发光谱。

The results suggested that at the excitation wavelength from 350 to 550 nm, significant differences of Gaussian database presented between dinophyta and bacillariophyta while similar characteristics were found in the same division.

研究发现，在波长为350～550 nm内，甲藻和硅藻的高斯基库特征差异显著，而同门类的高斯基库特征相似，表明高斯分解法为甲藻和硅藻的分类识别提供有效的技术手段。

The virus particle is bacilliform with a size of 20 nm× 100?

nm的杆形病毒颗粒，病毒基因组是大小约 8.0 kb 的dsRNA。

The maximal absorption wavelength of the nitro-stilbene derivatives with an ether bond exhibited approximate 30 to 40 nm bathochromic shift compared to that of nitro-stilbene dyes with an ester bond.

相对于酯键而言，通过醚键连接的对硝基二苯乙烯类分子的最大吸收波长有一个大约30至40 nm的红移现象。

Concentration of silver behenate solution affects the morphology and packing density of silver. The thin silver film of spherical silver particles, with an average diameter of 160 nm has been fabricated by a millimolar solution of silver behenate. The thick silver film is consisting of the regular silver particles with triangular or truncated triangular shape, which is formed at high concentration.

山嵛酸银分散液的浓度影响银薄膜中银粒子的堆积密度和形态，在很低浓度下可以得到银粒子均匀分散的金属银薄膜，球形银粒子平均粒径为160nm；而高浓度的山嵛酸银分散液得到较厚的金属银薄膜，薄膜中含有规则的三角形和截三角形银颗粒。

In the aqueous solution of sodium hydroxide,benzoylformic acid can coordinate with 2,4-dinitrophenylhydrazine to form a complex which has maximum absorption at 458 nm.Thus the content of benzoylformic acid can be quantitatively determined.

在氢氧化钠溶液中，苯乙酮酸和2，4-二硝基苯肼形成一种红棕色的溶液，该溶液在458 nm处有最大吸收，据此可以快速分析混合物中苯乙酮酸的含量。

Heated in a boiling water bath, penicillin antibiotics such as amoxicillin, ampicillin, sodium cloxacillin, sodium carbenicillin and sodium benzylpenicillin could react with K3[Fe6] to form combined products in a dilute HCl medium. As a result, resonance Rayleigh scattering intensity was enhanced greatly and new RRS spectra appeared. The maximum scattering wavelengths of the five combined products are all located at 330 nm.

在稀HCl介质中，K3[Fe6]与阿莫西林、氨苄西林、氯唑西林钠、羧苄西林钠和青霉素钠等抗生素药物在加热条件下反应生成结合产物，会导致溶液的共振瑞利散射强度急剧增强，并产生新的RRS光谱，5种反应产物的最大散射峰均位于330 nm附近。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。