查询词典 alkaline metal

Miniaturization of hydroxide of alkaline-earth metal and solubility of salt, flame reaction of alkaline-earth metal ions, separation and identify of alkaline-earth metal ions was investigated.

系统探讨碱土金属氢氧化物及其盐的溶解性、碱土金属元素的焰色反应、碱土金属离子的分离和鉴定等微型化实验，并将其设计成新的微型实验应用于无机化学实验教学，效果良

The effect of alkaline metal, alkaline-earth metal or rare-earth metal oxides doping to Pd/γ-Al〓O〓 on the properties of supported palladium catalysts were investigated.

研究含氧条件下单Pd催化剂上进行丙烯选择催化还原NO的反应，考察浸渍法制备的Pd/γ-Al〓O〓催化剂中加入碱或稀土金属氧化物助剂对NO转化率的影响，并对催化剂进行了XRD表征及在氧化气氛中饱和吸附NO后的TPD研究。

A soft silver-white ductile metallic element; the most electropositive and alkaline metal .

一种质地柔软的银白色韧性金属元素，是最具正电性与碱性的金属。

The effect of alkaline metal oxides and fluorides on the performances of green leadless fluxing agents for overglaze colors were studied by means of orthogonal experiments.

应用正交试验法，研究了碱金属氧化物及氟化物对环保型无铅釉上彩熔剂性能的影响。

The experiment results shown that: 1 the smaller the pH value, the smaller the use amount of alkaline metal and the alkali earth metal electrolyte demulsifier, when the pH value was 3, the waste fluid could be demulsified no any demulsifier and the use amount of the demulsifier did not increase remarkably along with the wiredrawing fluid concentration increased. 2 Using polymeric ferric sulfate as coagulant demulsifying, when the pH value was 8.4, the best adding amount was 40 mL per liter wastewater and the best precipitation time was 4 hours. Then the COD concentration was 480 mg/L, reaching the water quality requirements to enter the sewage treatment plant.

pH值越小，碱金属和碱土金属电解质破乳剂的用量越小，pH值为3时，无须加入任何破乳剂即可破乳；破乳剂用量并不随拉丝液浓度的增大而显著增加。2）用混凝剂聚合硫酸铁破乳，在pH值8.4时，最佳投加量为40 mL/L，最佳沉淀时间4 h，处理后上清液COD浓度为480 mg/L，能满足进入污水处理厂水质要求。

In the method, the organic base is used instead of the hydroxide of an alkaline metal such as NaOH and KOH.

在方法中，用有机碱而不是碱金属的氢氧化物如NaOH和KOH。

The alkaline glass is the ultra-thin glass containing alkaline metal oxide in chemical composition, i.e.

按照化学成分的不同，超薄玻璃可分为含碱超薄玻璃和无碱超薄玻璃。

Therefore, the content of an alkaline metal such as sodium and potassium that can be incorporated as an impurity into the metallic nickel powders can be significantly reduced.

因此，可以显著降低作为杂质引入金属镍粉中的碱金属如钠和钾的含量。

Atomic spectrum of ''.'alkaline'.'' metal

碱化的变成碱的；弱碱性的

The research has suggested:(1) The alkaline metal of load and absorbent A and having active materials and absorbent B twin towers of the catalyst to contact and is used of the metal oxide of transition, having better results to get rid of various kinds of sulphides, such as hydrogen, sulphur alcohol,etc. The sulphur holds can be more than 14%.

研究认为：(1)负载碱性金属及过渡金属氧化物的吸附剂A和带有活性物质和催化剂的吸附剂B双塔串联使用，对脱除硫化氢、硫醇等硫化物有较好效果，硫容可达14%以上。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。