查询词典 ash gray

Compared with general fly ash, CFB boiler fly ash is mainly composed of anhydrite and lime mineral, and its has erose grain and high -CaO and SO3 content.

对比普通粉煤灰性能，CFB锅炉粉煤灰具有颗粒形貌不规则-CaO和SO3含量高，以及以硬石膏和石灰作为主要矿物组成等特点。

Compressive strength curing 7 days of lime-polishing powder binder is slightly higher than those of lime-fly ash binder, but amplitude of strength curing 28 days is obvious high, average amplitude is up to 190% and maximal amplitude is up to 210% comparing to fly ash-lime binder. Lime-PP binder preceded lime-FA binder in intenerate index of 7 days and 28 days under the same ratio of PP to lime condition.

结果表明：在相同配比条件下，石灰－抛光砖粉结合料与石灰－粉煤灰结合料相比，前者的早期抗压强度略有提高，28d抗压强度增幅明显，平均增幅达190%，最大增幅高达210%；前者的7d、28d软化系数均高于后者，具有更好的水稳定性。

The activation of the coal fly ash was studied in this paper firstly. And the activation methods of other researchers were summarized. The Na2CO3 melting methods which are used to increase the acid lixiviate property of fly ash were put forward.

本文从粉煤灰的活化，即提高粉煤灰中铁铝酸溶活性入手，在总结他人方法的基础上，提出了用Na_2CO_3融熔来提高粉煤灰酸溶活性，并得到了较为理想的结果。

Results show that, following the leaching time extending, the leaching concentrations of heavy metals and lixiviate toxicity of heavy metals increase in the fly ash. When the ratio of liquid and solid add, the leaching concentrations of heavy metals obviously become big, and the Cd's leaching concentration is the biggest, when the ratio of liquid and solid is 90, the Cd's leaching ratio exceed the percent of 70. At the time pH is about 7, the leaching concentrations of heavy metals are the lowest. When the grain size is the bigger or little, the leaching concentrations of heavy metals are lower, however when the grain size is 250-900 μm, the concentrations are higher. After fly ash melt in the high temperature, the lixiviate toxicity of heavy metals greatly reduce, which explains that the effect of melting on heavy metals' stabilization is very good.

结果表明，随着浸出时间的增加，飞灰绝大部分重金属的浸出浓度增高，浸出毒性增强；液固比增加，大部分重金属的浸出率大大提高，其中重金属Cd的浸出率最大，在液固比为90时，飞灰中的Cd的浸出率达到70%以上；pH为中性左右的时候，医疗垃圾飞灰中的大部分重金属的浸出液浓度最低；颗粒尺寸在较大或者较小时，医疗垃圾飞灰中的大部分重金属浸出浓度较小，大部分重金属在颗粒尺寸250～900 μm时，重金属的浸出浓度较高；飞灰高温熔融后，重金属的浸出毒性大大降低，说明熔融对重金属有很好的固化效果。

Abstracts:Ash beech borer dies once a year.Its young worms decays drill in oleaceae ash plants of the genus phloem and xylem and makes the tree bark longitudinal crack or collapse and even cause trees death. and wither.

摘 要：白蜡窄吉丁虫在沈阳地区，主要以幼虫在木樨科梣属树木的韧皮部与木质部间钻蛀危害，使树皮纵裂或崩开，导致树木枯萎死亡。

The mix packing gained the anticipative effect. The orderless packing of the filling in the fine separation region plays a role of stabilization foam layer and decreasing the ash of concentrate. The plates in the separation region change the flowing state and increase markedly the ash grades along the column height.

混合充填模式取得了预期的效果，精选区域的填料乱堆充填起到了稳定泡沫层与降低精煤灰分的作用；分选区域的筛板充填改变了柱内的流动状态，显著提高了沿柱高的灰分梯度。

The CaO content in ash is related to magnetic petrographic characteristics of coal,and it is possible to predict CaO content in ash with coal macro-petrography.

结果表明：煤灰分中氧化钙含量与其宏观煤岩特征的关系比较密切，用宏观煤岩特征可以预测煤灰中氧化钙的含量。

The photodegradation of PAH on fly ash surfaces follows pseudo first-order kinetics under the irradiation of simulated sunlight with UV-B, whereas inner PAH of fly ash is photostable.

燃烧过程中产生的烟灰中含有一定浓度的PAH，在模拟太阳光中的UV-B部分的照射下，烟灰表面的PAH的光解符合一级动力学方程，而烟灰内部的PAH比较稳定，难以光解。

The hydrated products and pore size distribution of high road fly ash cements were studied by means of XRD,DTA,Mercury porosimeter,etc.,The experiment results showed that C-S-H gel,AFt were the main hydrated products in high road fly ash cement,but the contents of Ca 2 were lower.

实验结果表明，公路粉煤灰水泥的主要水化产物是C -S -H凝胶、AFt及少量的Ca 2 。

Test results show that the shear strength parameters of the fly ash with high calcium oxide content can make a notable change due to pozzolanic action and frost and thaw cycles, but for the fly ash with low calcium oxide content this phenomenon is not very obvious,and the influence of the frost and thaw cycles can be neglected.

试验结果表明，高氧化钙含量的粉煤灰的强度指标受上述两种作用的影响显著；低氧化钙含量的粉煤灰的强度指标在凝硬作用下也有所提高，但基本不受冻融作用的影响；干贮粉煤灰的渗透系数受凝硬和冻融作用的影响较小。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48