查询词典 powder

The coal tar pitch powder was used with each of 22 kinds of dispersants prepared coal tar pitch water slurry,and 6 kinds of dispersants were selected to prepare coal tar pitch water slurry with the high temperature coal tar pitch powder which has a softening point of 105℃.

采用冷冻粉碎的方法将软化点为90℃的中温煤沥青制得粒度≤200目的煤沥青粉后，再与22种分散剂制备煤沥青水浆，从中筛选出6种成浆性好的分散剂再与软化点为105℃的高温煤沥青粉制备煤沥青水浆，结果表明中温煤沥青粉比高温煤沥青粉更易制得稳定性好的煤沥青水浆。

Brown sugar , milk powder and fish powder would have great applied potential as the key components of bait for the control of houseflies .

结论家蝇非常喜爱含糖类，蛋白质的物质，红糖，奶粉，鱼粉在家蝇防治中作为引诱物，具有一定的应用潜力。

Housefly adults prefer to food with abundant sugar and proteins. Brown sugar, milk powder and fish powder would have great applied potential as the key components of bait for the control of houseflies.

家蝇非常喜爱含糖类、蛋白质的物质，红糖、奶粉、鱼粉在家蝇防治中作为引诱物，具有一定的应用潜力。

A filtration system that separates powder from the air stream to capture the overspray powder.

从空气中过喷的粉末捕获分离出的过滤系统，一般为旋风分离或滤芯被普遍使用。

Test results indicate that adding 10 percent ultra-fine lime stone powder blending material can obviously improve the early compression strength of concrete,and that the bending strength of concrete will be improved along with increase of addition amount of lime stone powder when the addition amount is less than 30 percent.

结果表明，掺入10%的超磨细石灰石粉掺合料可显著提高混凝土的早期抗压强度，当石灰石粉掺量小于30%时，抗折强度随其掺量的增加而提高。

Some industrial reduction technologies, such as zinc powder method, hydrazine hydrate method, sodium sulfide-zinc powder method etc, were analyzed and compared.

对生产工艺中各种还原方法（锌粉法、水合肼法、硫化钠－锌粉法等）进行了分析对比，指出硫化钠－锌粉法是一种适于工业化的还原方法。

Its working principle is introduced here: when a gas or powder starts a flame or explosion, the ultraviolet sensor will acquire the signal and sent it to the controller to produce the trigger voltage, and then the explosive suppressor will release a great number of gas promptly spraying dry powder extinguishing agents, which thereby form extinguishing agent smoke and effectively extinguish explosion flame. It is rapid and of strong antiinterference ability, high reliability and can be fixed easily. It is capable of effectively suppressing natural gas explosion in the simulative gas explosion test. It can be applied in CNG stations or other site where has explosive and combustible gas whereby to enhance the overall accident control ability.

当发生气体燃烧、爆炸时，紫外传感器接收火焰信号，传送至控制器，控制器产生触发电压，使抑爆器的产气剂释放出大量气体，驱动快速喷撒出干粉灭火剂，形成足够浓度的灭火剂粉雾体，有效扑灭爆炸火焰，具有动作速度快、抗干扰能力强、可靠性高、安装使用方便等优点，在天然气模拟爆炸试验中能有效抑制天然气爆炸，可用于CNG加气站或其他燃烧爆炸性气体场所，提高其整体防灾抗灾能力。

The influencing factors of soundness were tested by powder ratio. The results showed that steel slag sand was able to be used as fine aggregate. Firmness, f-CaO content, difference of hydrous activity and RO phase were the main factors of powder ratio.

研究结果表明：钢渣砂的各项特性不仅符合GB/T14684-2001建筑用砂标准而且具有一定的水硬活性，坚固性、f-CaO含量和活性差异及RO相是影响钢渣砂稳定胜的主要因素。

With this method the copper plating graphite powder was made up in 50% copper content .The silver- copper plating graphite composite was prepared while the silver- copper-graphite composite and the silver-graphite composite were also made up together .The mechanical and electric characteristics of the three kinds of composites were tested and it was found that the copper plating graphite powder can only optimize the properties of the silver matrix composite under the high content of the graphite ,the conductivity and the mechanical property was improved and the material could take higher current in the same carbon content .At 20% carbon content, the resistivity of Ag-graphite composite was 1.67 times as high as that of silver- copper plating graphite composite, the resistivity of Ag-Cu-graphite composite was 3.23 times as high as that of silver- copper plating graphite composite. The bending strength of silver-copper plating graphite composite was 2.17 times as high as that of silver- copper-graphite composite, and the bending strength was 2.11 times as high as that of silver- copper-graphite composite. The wearability of silver- copper plating graphite composite was also enhanced greatly at high carbon content.

利用该方法制备了50%铜含量的镀铜石墨粉，然后进一步制备了一系列相同碳含量的银-石墨复合材料、银-铜-石墨复合材料、银-镀铜石墨复合材料，对三种材料的机械、电气性能进行了综合对比，发现在低碳含量时镀铜石墨粉不能改善复合材料的上述主要性能，而在中高碳含量时则能明显优化复合材料的整体性能，提高了复合材料的电导率，使复合材料在中高碳含量时既具有较高的耐磨性同时也能负载较大的电流，复合材料的机械性能也因镀铜石墨粉的加入而大幅提高，20%碳含量时，银-石墨复合材料的电阻率是银-镀铜石墨复合材料的1.67倍，银-铜-石墨复合材料的电阻率为银-镀铜石墨复合材料的3.23倍，银-镀铜石墨复合材料抗弯强度是银-铜-石墨复合材料的2.17倍，是银-石墨复合材料的2.11倍，同时，在实验给定的条件下，中高碳含量时银-镀铜石墨复合材料的机械磨损耐磨性和通电磨损耐磨性都得以显著提高，银-镀铜石墨复合材料在实验时的接触电压降也更为稳定。

The study status on the preparation process of various methods to prepare silver-coated copper powder and the powder's properties were overviewed.

综述了制备银包铜粉各种方法的制备工艺及银包铜粉性能的研究现状，这些方法包括置换法、化学还原法、置换与化学沉积复合法及熔融雾化法。

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。