四体

On the base of structure and constitute analysis of organic chromium of nicotinate chromium and 〓, which all have evidently biological function, it reports the preparation of the first type of four kinds new organic chromium complexes . H〓O,. H〓O,,, in which Salen schiff base ligand and nicotinate or isonicotinate, or pyromucate, or benzoate ligand are contained simultaneously.

根据具有明显生物学功能的有机铬——烟酸铬和〓配合物的组成及结构特征，合成了第一类四种含有希夫碱Salen配体和烟酸、异烟酸、呋喃甲酸和苯甲酸的有机铬，其组成分别为。H〓O，。H〓O，，。

The title compound behaves as quadridentate ligand. The molecular structure is stabilized and it is displayed the optimum structure.

结论合成的目标产物属于四齿配体，分子呈现最优化的结构并具体一定的稳定性。

In complex 2, the manganese ion is six-coordinated by two oxygen atoms and two nitrogen atoms from a quadridentate ligand Lb. as well as one oxygen atom from DMF and one cyanide nitrogen atom from [Fe3] (superscript -) in axial positions.

化合物2中，[Fe3]通过其中的1个氰基与桥联，其中Mn离子为六配位，分别和四齿配体Lb的2个氧原子和2个氮原子、DMF的1个氧原子及[Fe3]中的氰基氮原子配位。

Fruit smooth, strongly 4-angled, with 4 bands of white trichomes separated by glabrous replum and valve midveins

果平滑，强烈四棱形，白色毛状体条纹状的具4 以无毛假隔膜和裂爿中脉分开 9 E。

Histological observation showed that normal structure was observed in all the groups before being harvested or after being preserved for 30 minutes. However, the more severe structure damage was observed in HPCs or hepatic sinusoidal cells with the more prolonged rewarm ischemia.

形态学观察发现，四组供肝于离体前及低温保存30分钟时的组织结构均无明显异常改变；而在复温缺血期间，各组供肝肝实质细胞及肝窦内皮细胞则表现有不同程度的结构损伤，且在程度上也与复温缺血时间呈明显的平行关系。

In the research of molding performance of MIM feedstock, for the shortcoming of capillary rheometry, it was propounded that using spiral mold test molding performance of feedstock, and a set of spiral mold was creatively designed with quickly exchange gates and closed mold cavity.

不锈钢模芯零件充模仿真分析表明，由于熔体流动的&跑道效应&，采用单浇口注射成形两侧流动严重不平衡，端面四个波峰和波谷明显，中部芯柱出现欠注，并发现该零件中间芯轴处成形最困难。

Use D4 or DMC,vinyl di-blocking agent,ringy vinyl,hexamethyl-disiloxane as raw materials,tetramethyl hydroxyl ammonium as catalyst,we synthesized a vinyl silicone oil.

以D4，乙烯基双封头，乙烯基环体，六甲基二硅氧烷等为原料，四甲基氢氧化铵为催化剂合成了摩尔质量和乙烯基含量不同的乙烯基硅油；以高含氢硅油，含氢双封头，D4合成实验所需的含氢硅油；以白碳黑为填料通过密炼等工序制备了医用高透明液体注射硅橡胶。

Underneath the tights,this being to protect and also as a sort of a design you could viddy clear enough in a certain light,so that I had one in the shape of a spider,Pete had a rooker,Georgie had a very fancy one of a flower,and poor old Dim had a very hound-and-horny one of a clown's litso.

我们四人穿着时髦的服装，当时时兴黑色贴体紧身服，它缀有我们称为果冻模子的东西，附在下面胯裆部，也能起保护作用，而且把它设计成各色花样，从某个角度可以看得很清楚。

Porcelains are loaded and fired in the large sagger and charcoal is put into the separation between the sagger and the outer refractory bricks. The separation is locally Called "fire chamber".

匣底垫四块耐火砖，在大匣的外侧一定距离处砌耐火砖圈体，并在底部开几个孔(以炉体大小而定小孔的多少，俗称&爬火眼&)，用于爬退木炭来降低温度。

The four-colour offset printing press Heidelberg, if a printing plate surface is a zinc or zinc or iron, iron will and Bailers in acid solution from chemical replacement reaction secable, nitrous oxide, drum body cannot ¤j¤?¤? backing and a printing plate, such as the drum surface long soaked in the acid corrosion, instilla secable, a printing plate chrome coated drum for restructuring into it or nickel does not result in more accidents.

四色海德堡胶印机，如果印版滚筒暗地是涂锌或铁，那么锌或铁城市与水斗溶液边的酸起化学置换不正答生锈、氧化，滚筒体不克不及紧贴衬垫物和印版，如滚筒背恒久泡在酸液边，会爆发腐化生锈，印版滚筒体改成涂铬或镍不离不会爆发以上变乱。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。