查询词典 active mass

But, unlike the black hole at the centre of our Milky Way, the million-solar-mass black hole inside NGC 4945 is an Active Galactic Nucleus that is frantically consuming any surrounding matter, and so releasing tremendous amounts of energy.

但与银河系核心的黑洞不同，NGC 4945中数百万太阳质量的超级黑洞正在疯狂地吞噬周围的物质、并释放极为巨大的能量——是个活跃星系核。

The method comprises the following steps: according to the raw water quality, the change of the number of bacteria inside the sedimentation tank and the water quality of the backflush yielding water, the backflush yielding water in the sedimentation tank is collected and deposited in a backflush phase of a working period; supernatant fluid containing mass active bacteria and soluble nutrient elements reflow to the sedimentation tank; total or partial sediment containing soluble nutrient elements in an underlayer reflow to the sedimentation tank and is reutilized by mass microorganisms in the sedimentation tank, thereby replenishing the nutrient substrate needed for microorganism growth, proliferation and metabolism under the condition of the low nutrition substrate, and maintaining the ecological stability in the sedimentation tank.

该方法根据原水水质和生物滤池内部细菌数量的变化以及反冲洗出水的水质，将生物滤池工作周期中反冲洗阶段的反冲洗出水收集并沉淀，将其含有大量活性细菌和溶解性营养元素的上清液回流至生物滤池，下层含有不溶性营养物质的沉淀全部或部分回流至生物滤池，被生物滤池当中的大量存在的微生物重新利用，从而补充在低营养基质条件下，微生物生长、增殖和新陈代谢所必需的营养基质，维持生物滤池当中的生态稳定。

The experiment of pretreatment shows that polyurethane foam can be washed clearly in both organic and chemical unoil, good effects of coarsening can be gained only if polyure foam can be squeened repeatly and uniform mass loss between 2.0 and 3.0mg·cm~(-3). The result of activation is perfect even if the cheaper silver nitrate instead of expensive palladium bichloride is used as active agent in the experiment. The influence on quality of chemical plating, conductivity, depositon rate by the kinds of reduction, silver contents, PH and stabilizing agent was studied.

预处理实验结果表明：采用有机除油和化学除油即可清除聚氨酯泡沫表面油污；反复充分挤压泡沫，控制聚氨酯泡沫均匀减重2.0～3.0mg·cm~(-3)可获得良好的粗化效果；用硝酸银型代替氯化钯做活化剂，并施以适当的工艺同样可取得良好的活化效果。

On the other hand, galaxy-mass black holes are found in Active Galactic Nuclei.

另一种有星系质量大小的黑洞常发现存在于活跃的星系核心。

A series of structural parameters and component parameters of novolac resin were concluded through DEPT 135 spectrum of typical novolac resin with low or high mass fraction,including o-o,o-p and p-p condensation percentage of total condensation reaction;o-,p-percentage of active point in condensation reaction;reaction percentage of different active points;condensation ratioof phenolic resin in double ortho way and the average number of resin.

为准确了解线形酚醛树脂的组成和微细结构，利用高分辨率核磁共振技术中近年发展起来的DEPT135测定方法，测定了线形酚醛树脂的有关结构参数：o-o位缩聚百分率、o-p位缩聚百分率、p-p缩聚百分率；参与缩聚反应活性点中o位占据百分率、p占据百分率以及各个活性点参与反应百分率；同核双邻位缩聚值；不同类型酚醛树脂的平均核体数。

Black hole mass, along with the ratio of the accretionrate to the Eddington accretion rate, is a fundamental parameter of active galactic nuclei.

与吸积率和爱丁顿吸积率的比率一道，黑洞质量也是活动星系核的一个基本参数。

Heat conduction is an important branch of heat and mass transfer and one of the very active field in modern science and technology.

热传导是传热传质学科的一个重要分支，是当代技术科学中十分活跃的研究方向之一。

Found that the constitution of the absorbent could affect the debinding efficiency greatly; for the liquid phase debinding temperature extent, the mechanism of the absorbent is capillary action, 100~200 screen mesh alumina powder had the best debinding efficiency at 130℃; for the gas phase debinding temperature extent, adding some active carbon to the absorbent could control the formation of the hyperoxide barrier lay, accelerate the mass transfer rate, also enhance the debinding efficiency; studied the relationship between the debinding efficiency and the shape of the green part and the solid load; furthermore, did trial study on the solvent debinding.

发现吸附剂的组成对脱脂效率有较大影响；在液相脱脂温度段，吸附剂的作用机制为毛细管作用，100~200目的氧化铝粉末在130℃时具有最高的脱脂效率；在气相脱脂阶段，在吸附剂中引入活性碳可以抑制不利于脱脂的过氧化物阻挡层的形成，加快气相在坯体中的传质速率，进而提高脱脂效率；研究了坯体形状尺寸和装载量等因素与脱脂效率的关系；还对溶剂脱脂进行了试探性研究。

Results Body mass index,family history,and hypertension history were found to be OSAS-related risk factors,OR=1.502,8.511 and 5.497.Conclusion Body mass index,family history,and hypertension history are all the risk factors for OSAS,so the incurrence of OSAS can be lowered down by instruction of keeping fit,controlling body weight and keeping on diet,proper exercises,active control of blood pressure,changing the bad living habit and quitting drinking and smoking so that their life quality is improved.

笔者对OSAS的疾病相关危险因素进行分析，为降低该疾病的发生率，减轻患者疾病相关症状，改善防治措施提供依据。1对象与方法1.1研究对象选取2007年4-7月在广州市呼吸疾病研究所睡眠中心和珠江医院呼吸科睡眠室接受全夜多导睡眠监测(polysomnography，PSG)的患者为研究对象，入选的标准为年龄≥18岁，本人知情同意。

It emerges, the mass media more than a number of new elements, active space of the mass media, but also brought a small amount of normal social impede the spread of factors.

它的出现，使大众传媒多了一些新鲜的元素，活跃了大众传媒空间，但也带入了少量有碍于正常社会传播的因素。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。