查询词典 D

There is no close relationship between the electronic property of the substituent and the value of β, indicating that an effective intramolecular charge-transfer from D to nitro group does not exist.

测试结果发现，这些化合物的β值为10^-^2^9esu数量级，其数值大小与取代基D的电子性质并无直接的关系，表明从D到NO2并未发生有效的分子内电荷转移。

The problem of set partitions in combinatorial mathematics is conside-red, and the following three points are emphasized:(1) the non-recursivealgorithm for computing the number of partitions of an N-Set, P;(2)the algorithm for mapping the partition vector V to the partition sequencenumber D;(3) the algorithm for mapping the partition sequence number Dto the partition vector V.

本文对组合数学中的集合划分问题进行了一些探索，试图回答下面三个问题：①集合划分方法数P的非递归算法，②划分向量V映射到划分序号D的算法，③划分序号D映射到划分向量V的算法。本文以划分的构造树为基础，加以变换，得到数目树和分块树，由此求得P，以及K块划分方法数P_K。

A simple of improving the differential frequency by D flip-flop is introduced. The method is verified by timing analysis. Numberical application conditions are given out. The reason for the error production is analyzed and the maximum error range are calculated.

介绍了D触发器差频的方法和应用条件，用最基础的时序分析的方法，对D触发器差频做一个理论上的验证，定量给出应用条件，并分析了产生误差的原因和最大的误差范围。

Not many foods naturally contain vitamin D. Foods high in these this vitamin in olein include oily fish , such as salmon, tuna and micro mackerel , and fish liver oils.

食物中含有天然维他命D的不多，食物中含有高量维他命D的包括油脂较多的鱼类，像是鲑鱼、鲔鱼、鲭鱼以及鱼类肝脏油脂。

It is found that the nature of the interaction between CO and Pd(110) surface by population analysis and DOS analysis what the 5σ orbital of CO and the d orbital of metal formed electron donation; and the 2π* orbital of CO and 4s and 3d orbital of metal formed electron back- donation.

通过布居数分析和态密度分析发现， CO 和 Pd(110)表面的相互作用，主要是 CO 的5σ轨道和金属原子的 d 轨道形成5σ-d 配位键；同时 CO 的2π*轨道和金属原子的4s 和3d 轨道形成反馈键。

Following the same line of reasoning in the case of vitamin D it is evident that the terms rickets and osteomalacia have become inadequate to serve in the case of vitamin D deficiency.

同理，维生素D缺乏对健康的损害也不仅仅表现为佝偻病和骨软化症。

Challenge was made after one month of immunization by vein. Re sults:The parasitemia of recombinant virus immunized monkey was 0.0 1%in first tw o days of post-challenge. No parasites were determined from third to 12th day. W hereas the parasitemia of control virus immunized-monkey and blank control monk ey rose progressively,went to 2.5%～6.0% at 6th～8th days of post-challenge, an d the t ime of parasitemia was 12～13 days.

结果： 在免疫后1个月攻虫，重组痘苗病毒免疫猴从第3天一直到第12 d的采血检查中均未发现疟原虫；非重组痘苗病毒免疫猴第3天后原虫感染率上升，第6天原虫感染率最高达到6.0%，而后原虫感染率逐渐下降，原虫持续时间为13天；空白对照猴第3天后原虫感染率也上升，第8天原虫感染率最高达到2.5%，而后原虫感染率逐渐下降，原虫持续出现时间为12 d。

Objective:To compare the levels of serum parathormone, serum calcium and serum phosphorus before and after platelet collection, and to compare the effects of Caltrate D on intoxication of citrate in collecting platelets.

选择有枸橼酸盐中毒症状的献血者 1 0例，第 1次采集血小板前不补钙，第 2次采集前 4 d开始服用钙尔奇 D6 0 0咀嚼片，1片/ d，观察是否出现枸橼酸中毒症状。

In the monograph,the parameters of C-D production function improved by Jan Tinbergen are determined according to the observation in Eviews and the primary parameters economic analysis is presented by partial differentiation,an application of C-D producti...

对詹恩·丁伯根改进的C-D生产函数的Eviews确定进行了研究，并对其主要参数作偏导数分析基础上的经济评析。

Similarly, the AMR begin to increase and then decrease with increasing the thickness d of the seed layer, and has a maximum value at a critical thickness d of 5.32nm. Compared to the permalloy films deposited on Ta seed layer ,the AMR enhancement of 10%-46% is observed in the permallay films deposited on (Ni0.82Fe0.18)1-xNbx seed layer.(2) The coercivity Hc1 obtained for magnetic field H applied paralley to the easyaxis is large than Hc2 for H applied perpendicular to the in-plane easy axis, and both of coercivity are consistent with the change of x.

2沿样品易轴方向的矫顽力Hc_1比难轴方向的矫顽力Hc_2大，两者随Nb原子的百分含量x的变化是一致的，饱和磁化强度Ms随x的增大先增大后减小，在x=27.1％处，Hc_1和Hc_2都比较小，而Ms则达到最大；种子层厚度d不能明显改变坡莫合金薄膜的磁性能；与以传统材料Ta为种子层的坡莫合金薄膜相比，以Ni_(0.82Fe_(0.18)_(0.829)Nb_(0.271)为种子层的坡莫合金薄膜的矫顽力只有轻微减小，但是Msg 以w讪Fq.t）lkNk为种于层的坡莫合全薄膜的各向异性戳电阻及磁性能研究却要大，mk坡莫合金层厂度！

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。