查询词典 ND

The Sm-Nd isochron age (1182±50Ma) of Kangshan metamorphic complex has first been presented in the paper, which deny the tranditional point that the complex is Archean Taihua group. It's suggested that the plagioclase-amphibolite originates from subcon tinantal lithospheric mantal, assimilating and hybridizing minor crustal materials.

首次提供康山变质杂岩的Sm-Nd等时线年龄(1182±50Ma)，否定了康山变质杂岩是太华群的传统认识，并提出康山变质杂岩内斜长角闪岩原岩主要来源于大陆岩石圈地幔，同化混染了少量壳内物质。

Cumulative NH4+-N is a good evaluating index of soil N-supplying not only for the first season crop, but also for two successive season crops. ND is more correct in revealing the potential mineralizable nitrogen when SON was regarded as mineralized N, although cumulative SON alone is not a good index for the potential of mineralizable nitrogen. And cumulative TSN could also be taken as an index for the potential mineralizable nitrogen to some extent.

淹水培养期间铵态氮累积量是评价可矿化氮的较好指标，不仅适宜于第一季作物，而且也适用于连续两季作物；SON累积量不能单独作为；SON累积量不能单独作为反映可矿化氮的指标，但用ND反映土壤可矿化氮潜势时，包括SON后更加准确；TSN在一定程度上能够反映土壤可矿化氮。

After moule and anaesthesia, therabbits were treated with MedliteC~6-Nd:YAG laser, wave length:1064nm, spot diameter:3mm, energy density: 12J/cm~2, the distance between the light and skin: 8cm, irradiationtime: 40 seconds, frequency: 10Hz. The depth of the wound causedby the laser on the backs of rabbits was to the derm.

经脱毛、局麻后，用Nd：YAG激光(Medlite C~6，ConBio公司，美国)波长1064nm、光斑直径3mm、能量密度12J／cm~2、光皮距离8cm、时间40秒照射家兔背部造成深达真皮的损伤。

Grounding on the purpose of industrialization of laser, based on the thought of astigmatism compensation and thermal stability of the cavity, we employed high power LD to pump Nd:YVO4 crystal and used the introcavity frequency doubling with type 1 noncritical phase-match LBO crystal, which has high damage threshold. The cavity parameters are optimized by the use of ABCD theory and the resonatorstructure CAD software.

立足于激光器的产品化，基于谐振腔的像散补偿和热稳定性的设计思想，采用大功率LD单端泵浦Nd：YVO_4晶体，具有高光损伤阈值的Ⅰ类非临界相位匹配LBO晶体腔内倍频方案，应用ABCD定律和腔结构模拟软件CDA设计并优化了一组腔参数。

The measure of Cyclic Voltammetry illustrated that the signal optimization subsequence is Nd ＞Sm ＞La＞Ce＞TiO2, which basically follows the subsequence of oxidizability.

电化学循环伏安测试表明：掺杂后光催化信号优化顺序为Nd ＞Sm ＞La＞Ce＞TiO2，该规律基本遵循掺杂元素的氧化性由强到弱的顺序。

The only method is updating to ipv6 by using the ND precept.But the new protocol is not compatible with ipv4;the coexistence of IPv4 and IPv6 network will perdure.

对这些网络要求目前的IPv4网络根本无能为力，只有把网络升级为IPv6版本，利用ND技术才可方便地解决移动节点的IP配置问题。

Taking the volcanic-intrusive complex in the Yanbei porphyry tin oredistrict as an example and based on the covariance plots of Ce,Nd,Sm,Eu,Yb in six different elemont-element,ratio-ratio coordinates,the authors havereestablished the petrogenic mechanism of the volcanic-intrusive complex inthis district.

以岩背斑岩锡矿区火山侵入杂岩为例，根据稀土元素Ce，Nd，Eu，Yb等5种元素6种不同式样协变关系（元素－元素，比值－比值）的判别，重建了本区火山侵入杂岩成岩机制。

Because whole rock samples always contain some retrograde minerals,the tie line of garnet + whole-rock in Sm-Nd isochron diagram or the tie line of phengite + whole- rock in Rb-Sr isochron diagram can give a geologically meaningless age.

由于全岩样品总是含有数量不等的退变质矿物，因此石榴石+全岩 Sm-Nd 法或多硅白云母+全岩 Rh-Sr 法将有可能给出无地质意义的年龄。

In the second part of this work, a computor program is developed to calcalate〓L〓energy levels, reduced matrix elements, crystal field energy levels, oscillator strengths of f-f transition and theoretical f-f absorption spectra of f-ions. The calculation results of the f-f absorption spectra of Nd in water coordination sphere and H di (2-ethylhexyl phosphinic acid coordination sphere with different symmetric structure are shown and compared with observed spectra.

在第二部分中，编制了计算f离子的〓L，能级、约化矩阵元、晶体场中Stark能级分裂、f-f跃迁振子强度及f-f理论吸收光谱的计算机程序，以此程序分别计算了Nd在不同结构对称的水配位层及烷基磷酸配位层中的f-f吸收光谱，通过与实验谱比较，识别了可能的配位层结构，并讨论了f-f跃迁的强度机理。

Nd:YAG Laser (wavelength 1.06μm, power 30w, 40w)was used to irradiate the vegetative cells of Haematococcus pluvialis, and with irradiate does of 10 sec, 30sec,60sec.

利用Nd：YAG激光(波长 1.06μm，功率30W，40W)照射雨生红球藻的营养细胞，辐照时间为10sec，30sec，60sec。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。