查询词典 vac

This study group was compared to a retrospectively identified comparison group of 19 patients, in which the VAC device was not used.

回顾性的分析没有采用VAC的19名患者作为对照。

It was found that VAC can be smoothly photografted onto LDPE film with"film combination"system, e. g. conversion percent and grafting efficiency are 70％ and 76％, irrespcetively, with UV intensity of 5400μw/cm〓 and irradiation time of 3min. The reaction orders of polymerization rate to monomer concentration and photoinitiator concentration are about 1 and 0.76, irrespectively, showing that chain transfer reaction takes place with much ease in VAC/LDPE system.

发现利用本文所设计的方法可将VAC快速地接枝在LDPE膜表面，如在光强为5400μw/cm〓，光照3min时，转化率和接枝效率可分别达到70％和76％；聚合反应速率对单体的反应级数约为1，而对光引发剂的反应级数为0.76，说明VAC光接枝聚合中链转移反应占相当大的比例。

This dissertation was designed to study heteto-phase grafting polymerization of vinyl acetate , maleic anhydride and VAC/MAH binary monomer system, irrespectively, with low density polyethylene film as substrate and benzophenone as photoinitiator. The purpose is to develop new and more effective methods to modify the surface and buck properties of polyolefines by studying the grafting mechanism of the system and exploring the characteristics of the grafting process.

本文主要以低密度聚乙烯膜为基体膜，以二苯甲酮为光引发剂，分别对醋酸乙烯酯、马来酸酐以及VAC/MAH的非均相接枝聚合反应进行了系统研究，以探讨相关的接枝反应机理、接枝反应过程以及接枝工艺的可行性，目的在于建立聚烯烃材料本体和表面改性新方法。

Low Voltage AC system operating voltages from 120 to 600 VAC.

低压 交流电系统中从120到600 VAC的电压称为低压。

An optional alarm output contact transfer provides remote signaling capability (24 VAC, 1A).

任意警报产品联络调动提供遥远的信号能力(24 VAC， 1A)。

In some cases, there was 1 additional operation needed as a VAC dressing may have been placed for a period of 2 to 3 days to create a granulated bed for closure.

在一些病例中需要进行一个额外的手术，因为VAC辅料已经应用了2到3天而形成了闭合的肉芽组织。

All cases were given debridement, and changed the pattern of fracture fixation or adjusting the position of outer fixation device. Then the VAC was applied in a region- and layer-wise manner in the intermuscular space, interjoint space and the interfracture space., The sequential and time of tube withdrawal was decided by tube position and drainage pattern. with drainage changes every 5~7 days according to the drainage state. The drainage were applied 1~4 times per case, averaging out at 2.2 times.

所有病例均先行清创，更换骨折固定类型或调整外固定架固定位置，在感染的肌肉间隙、关节间隙、骨折间隙等分区应用、分层应用VAC，并根据置管部位和引流情况决定拔管次序和时间， 5～7天根据引流情况进行更换引流装置，应用次数为1～4次/例，平均2.2次/例。

The camera can look straight down with no loss of coverage. It can operate in a wide range of lighting conditions with the 4-9 mm auto-iris varifocal lens. The line-lock and V-phase in 24-VAC mode allows for extra stability. The camera has 10 internal, adjustable DIP switches for maximum picture quality and a second video output for a test monitor.

该机向下扫描时不会漏掉监视范围。4-9mm的自动虹膜变焦镜头允许摄像机在各种光线下工作。24-VAC电源模式下的line-lock和V-phase更稳定。10个内置可调DIP开关使摄像机能拍出最清晰图片，第二次视频输出用于试用监测器。

VAC technology appears to be safe and effective in the treatment of radiation-associated wound complications.

VAC技术是治疗放射相关的创伤合并症的有效而安全的手段。

Because of very high reactivity of the vinyl acetate propagating radical, chain transfer and termination often take place in polymerization of VAc.

VAc的自由基异常活泼，在聚合中容易发生向聚合物的链转移反应，实现VAc的&活性&/可控自由基聚合是一个挑战。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。