Clearly the principle requirement for a substance to be capable of forming a structural unit of a polymer chain is that it must be difunctional.

1、

Such a process is particularly useful in the production of difunctional monomers and intermediates in the synthesis of adipic acid.

这样一种方法对于制备双官能单体和合成己二酸的中间体特别有用。

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2、

In this paper modem molecular simulation technology and quantum chemical calculation method are adopted to determine the material for synthesizing difunctional peroxide initiator.

本文用现代分子模拟技术，采用量子化学计算方法确定了合成双官能度过氧引发剂的原料；

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3、

The Synthesis and Application of a Difunctional Group Phase Transfer Catalyst

双官能团相转移催化剂的合成和应用

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4、

Study on Synthesis of SPEU with Different Difunctional Reagents as Extender

以含有不同活性双官能团试剂作扩链剂的嵌段聚醚氨酯合成研究

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5、

Study on the Experiment and Measurement for Wireless-fuse Crossing High-speed Goal Difunctional Fuse Resistor

多卜勒引信的弹目交会模拟实验与测试系统研究双功能熔断电阻器

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6、

The synthesis, properties, modification and application of polybenzoxazines were reviewed. Besides, the other difunctional benzoxazines and polyfunctional naphthoxazines were also discussed.

综合介绍了苯并口恶嗪树脂的合成、性能、改性和应用，并对其他双酚类苯并口恶嗪和萘并口恶嗪进行了概述。

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7、

Quantitative analysis of organic functional groups difunctional comonomer

有机官能团定量分析二官能[团]共聚单体

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8、

Synthesis and properties of difunctional cycloaliphatic epoxides

双官能团液体脂环族环氧化合物的合成与性能

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9、

Clinical analysis of erectile disfunction and sex transmitted disease

性传播疾病与勃起功能障碍

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10、

Coxsackie virus; Multiple organs and multiple systems disfunction; Young child.

柯萨奇病毒；多器官多系统损害；小儿。

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11、

Clinical Significance of Detection of Serum Interleukin-8 in Children with Thyroid Disfunction

甲状腺功能异常患儿血清白细胞介素-8检测的意义

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12、

Objective To study efficiency of prostaglandin EI for chronic renal disfunction.

目的探讨前列地尔注射剂对慢性肾功能不全的疗效。

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13、

Cases died of multiple organ disfunction syndrome ( MODS).

3例（4条肢体）围手术期发生多脏器功能衰竭死亡。

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14、

Lumbar spine instability mainly exhibits the spinal functional units' disfunction.

下腰椎不稳症主要表现为脊柱功能单位的异常。

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15、

The protection of spinal cord disfunction caused by acute ischemia

脊髓急性缺血后功能障碍的保护

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16、

Objective To determine the relationship between erectile disfunction and sex transmitted diseases.

目的探讨勃起功能障碍（ED）与性传播疾病（STD）的关系。

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17、

The treatment and pathogenesis of liver and renal disfunction caused by severe trauma with shock

严重创伤后休克并发肝肾功能障碍的治疗及机制分析

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18、

The introduction of public policy without strict legal restriction is likely to cause government disfunction.

我国竞争政策及其立法明显滞后，公共政策的介入如果没有严格的法律约束，便很容易导致政府的失灵。

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19、

Perioperative Management of Renal Disfunction and Acute Renal Failure in Adult Patient Undergoing Cardiac Surgery

成年心脏病人围术期肾脏功能不全和急性肾功能衰竭的综合治疗

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20、

The Neural Mechanism Underlying Urinary Bladder Disfunction Secondary to Chronic Prostatitis

慢性前列腺炎膀胱功能异常神经机制的实验研究

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