查询词典 n-tetracosane

According to the electrophilic substitution of α-Allocryptopin by ICl, it can be suggested that there are competitions of n-donors (such as N and O atom occurred in alkaloid or solvent molecules) with the conjugated π system in alkaloid molecule for iodine monochloride when charge-transfer complexes are formed, which may block the formation of pre-reactive π-complex intermediate, and thus suppress the electrophilic substitution.

这一方法标记过程简便，标记产物富集于有机相，易于进一步纯化，其放射化学纯度接近95%，标记率超过70%；ICl与α-别隐品碱的亲电碘化反应结果表明，生物碱底物或溶剂分子中的N、O等n电子给体可能与亲电试剂形成电荷转移络合物，竞争芳香亲电取代反应π络合物反应前体的形成，从而抑制碘化反应的发生。

The results show that the ground state structures of CB(superscript -)(n=1~6) clusters are linear as C clusters due to their isoelectrons. For CB (n=1~6) clusters, the ground state structure of C2B is asymmetric triangle and C6B is C(subscript 2v) symmetry planar monocycle, while the other clusters are linear.

结果表明CB(n=1~6)团簇的基态构型均为线形，这与等电子的C簇合物的结构是一致的；CB(n=1~6)团簇的基态构型中，除C2B为不对称的三角形，C6B为具有C(下标 2v)对称性的环状结构外，其余均为线形结构。

The optimum reaction conditions were: n :n=1:1.10, reaction temperature 85~95 ℃, reaction time 4 h, water carrying agent A was 50% base on the morpholine volume, the yield and purity of the product were 94.3% and 99.6%.

其最佳反应条件为：n：n＝1：1.10，反应温度为85~95℃，反应时间为4 h，带水剂A的用量为吗啉体积分数的50%，产品收率为94.3%，纯度为99.6%。

Hindered amine light stabilizer of Cyasorb UV-3346 was synthesized in total yield of 60% by three steps from cyanuric chloride,morpholine and N,N′-bis-(2,2,6,6-tetramethyl-4-piperidinyl)-1,6-hexanediamine as starting materials.

以三聚氯氰、吗啉和N，N′-二(2，2，6，6-四甲基-4-哌啶基)-1，6-己二胺为原料用3步法合成得到受阻胺类光稳定剂Cyasorb UV-3346，总收率为60%。

Methods Sixty-seven cases of adult patients undergoing valves replacement were randomized into modified ultrafiltration group (n=33) and control group (n=34). Blood gas parameter such as PO2, PCO2 were measured at pre-cardiopulmonary bypass, end CPB, and post MUF (or 20 min post CPB in control group). Ventilatory support time, usage time and amount of vasoactive drug and ejection fraction of left ventricular were also measured in the early period of operation.

67例成人心脏瓣膜置换术患者随机分为MUF组(n=33)和无超滤对照组(n=34)，动态观察体外循环(cardiopulmonary bypass， CPB)前、CPB停机时及MUF结束时（对照组在CPB停机20min）血气氧分压及二氧化碳分压、术后呼吸机辅助呼吸时间、血管活性药物用量及使用时间、心脏射血分数等心肺功能指标。

Rules: In each n x n grid, fill each cell with a number from 1 to n so that each number appears exactly once in each row and column.

规则：在 nxn 的表格中，将每一行，每一列，都填入 1 至 n 的数字各一次。

We evaluated spine health in 186 newly diagnosed children (median age 5.3 years, 108 boys) with ALL (precursor B cell: N = 167; T-cell: N = 19), who were enrolled in a national bone health research program.

我们对186例新诊断为ALL（前体B细胞：N =167；T细胞：N=19例）儿童（平均年龄为5.3岁，108例男孩）的脊柱健康作了评估，这些儿童被纳入一项全国性的骨骼健康调查计划。

The concentration of diluted rv virus solution was determined by counting the nih3t3 cells with fluorescent expression. then the rv/egfp virus was used to transfer sk n sh neuroblastoma cells. the transfection efficiency in sk n sh cell was measured by flow cytometer.

将稀释的rv病毒液感染nih3t3细胞，计数nih3t3荧光表达细胞的数量来确定病毒的浓度；使用rv载体感染sk n sh细胞，通过流式细胞学荧光检测明确rv在sk n sh细胞的感染效率。

Further, the RAID device receives 1/Nth of the data block over each of the virtual channels and writes each received 1/Nth data block to a different one of the N disk drives.

此外，RAID设备(40)接收经过每个虚拟通道的N分之一的数据块并把所接收的每个N分之一的数据块写到N个磁盘驱动器(60－63)的一个不同的磁盘驱动器。

Disguise disgust dish disk dislike dismay n/.

假装，伪装 v n 厌恶，恶心。 v 使厌恶。 n 碟子，盘子，菜肴。 n 圆盘，圆面，盘状物。

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。