取代物

Results and discussion Molecular design and synthesis Although a vast number of phthalocyanines have been reported, to our knowledge, these 1,4-disubstituted analogues remain relatively rare.6b,8 Compared with the unsubstituted zinc phthalocyanine, they exhibit a red-shifted Q band at ca.

结果和讨论分子设计和合成虽然数目庞大的酞菁的报告，以我们的知识，这些1，4取代类似物仍然相对 rare.6b ， 8日与unsubstituted锌酞菁，他们表现出了红移Q带

Compared with the unsubstituted zinc phthalocyanine, these di-a-substituted analogues have a red-shifted Q band (at 689 vs. 670 nm) and exhibit a relatively weaker uorescence emission and a higher efciency at generating singlet oxygen.

与unsubstituted锌酞菁，这些娣给取代类似物有红移Q带（在689与670 nm ）和展览相对弱uorescence排放和更高efciency产生单线态氧。

To use the words of Martin Buber, the great Jewish philosopher, segregation substitutes an "I-it" relationship for the "I-thou" relationship, and ends up relegating persons to the status of things.

借用杰出的犹太哲学家马丁E布贝尔的说法，隔离用&我─它&关系取代&我─你&关系，最后把人降低到物的地位。

Oil has supplanted coffee as our main export.

原油已经取代咖啡成为我们的主要出口物。

Meso-Tetrakis(2,6-dichlorophenyl)porphyrinmanganese chloride and carbonyl ruthenium meso-tetrakis(2,6-dichlorophenyl)porphyrin were prepared and used to catalyze the diastereoselective epoxidation and amidation of 3β-substituted Δ 5-steroid derivatives.

研究了 5 ，10 ，15 ，2 0 (2 ，6 二氯苯基)卟啉锰及其钌配合物这类非手性的催化剂催化3β取代的Δ5 甾体衍生物的非对映选择性环氧化及酰胺化反应。

The color in the gem varieties of spodumene is due to impurities of iron (producing yellow to green colored spodumene), chromium (producing medium-deep green colored spodumene) or manganese (producing pink to lilac spodumene), all substituting for aluminum in the crystal structure.

宝石级锂辉石，其颜色主要是因为含有内含物，如铁可以产生黄色到绿色锂辉石，铬可以产生中等深绿色的锂辉石，而锰则可产生粉红到丁香紫的锂辉石，而在晶体结构上部分被铝取代。

Under these conditions several aryl iodides bearing awide range of functional groups were converted into the corresponding aryl azides in good yields.

在重新优化后的条件下，大部分不活泼芳基溴化物可以与叠氮化钠发生交叉偶联反应得到良好收率的芳基叠氮化储蓄型投资银条合物，但是有拉电子基团取代的芳基溴化物与叠氮化钠的偶联反应则难以进行。

4 Kinds of methylthiazoline multithioether s were synthesized from the nucleophilic substitution of 5-methyl-thiazolidine-2-thione reacting with bromides,respectively.

通过5-甲基-2-噻唑烷硫酮与溴代物的亲核取代反应合成了四种甲基噻唑啉多头硫醚，利用红外光谱、核磁共振(1H NMR)光谱和元素分析对这四种化合物的结构进行了表征。

The morphologies formed were characterized by SEM and DLS methods, and spherical particles with various sizes were observed.5. To obtain a amphiphilic dumbbell-shaped copolymer, we successfully synthesized dendritic-linear-dendritic triblock copolymers composed of linear polystyrene and poly dendrons.

树枝状共聚物最外层PSt-PNAS链段利用乙二胺和NAS活性酯的取代反应交联，同时，中间的聚丙交酯段被降解，得到纳米空心球，用SEM和DLS进行观测和表征。5。

Two large panniers starboard side of cabin, fore and aft of main landing gear on helicopter numbered 032 (forward panniers only on 031); starboard airstair-type cabin door, aft of flight deck, divided horizontally into upward- and downward-opening sections, with box fairing in place of window; hatch window deleted above starboard rear pannier; new TA-8Ka APU positioned ahove rear of engine bay fairing, with slot-type air intake at front of housing, displacing usual ESM and IR jamming pods, gives radar and antenna an independent power supply.

两舱右舷侧，脱颖而出，对直升机主起落架向后大背篓编号032（只在031向前背篓）；右舷airstair型舱门，飞行甲板尾部，分为向上和向下开节水平，有框窗地方整流罩；孵化窗口上面右舷后部储物删除；新大安8Ka的APU定位开槽式在屋前的进气发动机舱整流罩ahove后，取代了通常的ESM和红外干扰吊舱，使雷达天线和一个独立的电力供应。

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。