查询词典 alkalis

It can be used for general service steam, gases, solvents, mild acids, alkalis and most abrasive liquids.

能应用于一般工况下的蒸汽、煤气、溶剂、中酸、中碱及大多数易磨损介质。

They illustrate the fact that PAN gel contracts in acids and swells in alkalis.

结合凝胶变形的微观机制，初步给出了理论解释。

Sulphur and alkalis, are features of the RHI Refractories grades and in combina

用性要求的窑口理念，达到了一个最长的耐火砖使用寿命。

Through the suitable modification before dyeing, cotton fabric can be dyed in the condition of free salts and alkalis.

首先通过棉织物改性实验，优化了棉织物利用PECH-amine改性的方法和改性工艺。

The chemical composition of silica fume is SiO2, a inert substance which will not react with most acids and alkalis.

硅微粉的化学成份为（SiO2）属于惰性物质，与大部分酸、碱不起化学反应。

Though theoretical analysis and practice, it was found that the defects occur due to a failure of lubricant and the suspension and precipitation of soap liquid can be overcome by neutralizing it with alkalis.

通过理论分析，实际和生产验证，找到了出现表面缺陷的原因是由于润滑剂失败。可采用强碱中合法解决这一问题。

The results show that glass ceramics with thermal expansion coefficient of 5.11×10^(-6)℃, major phase of α-cordierite and ε=5.5, tan σ=2.1×10^(-4) can be prepared by the addition of 3.6% alkalis (Li2O+Na2O), and Li2O occupies 1.8%. With Li2O substitution for Na2O, spontaneous crystallization is obviously enhanced, and temperature of the first crystallization peak decreases from 950℃ to nearly 900℃, but the crystallization temperature of the second peak was not varied. With the increase of Li2O content, mixed alkali effect can be observed from the thermal expansion coefficient and dielectric loss curve which decreases first and then increases. Dielectric constant decreases monotonously with the increase of Li2O content.

研究结果表明：Li2O和Na2O总含量为3.6%，其中Li2O含量为1.8%时，微晶玻璃以α-堇青石为主晶相，热膨胀系数为5.11×10^(-6)℃，微波频率下介电常数ε为5.5，介电损耗tanσ为2.1×10^(-4)；随着Li对Na的取代，玻璃的析晶能力增强，初始析晶峰温度从950℃降至900℃左右，但没有降低第二析晶峰温度；随着Li2O含量增加，热膨胀系数及介电损耗都出现明显的混合碱效应，曲线呈现先降低后升高的变化趋势；样品的介电常数随Li2O含量增加单调降低。

The results show that glass ceramics with thermal expansion coefficient of 5.11×106 ℃, major phase of α-cordierite and εr=5.5, tan σ=2.1×104 can be prepared by the addition of 3.6% alkalis(Li2O+Na2O), and Li2O occupies 1.8%. With Li2O substitution for Na2O, spontaneous crystallization is obviously enhanced, and temperature of the first crystallization peak decreases from 950 ℃ to nearly 900 ℃, but the crystallization temperature of the second peak was not varied. With the increase of Li2O content, mixed alkali effect can be observed from the thermal expansion coefficient and dielectric loss curve which decreases first and then increases. Dielectric constant decreases monotonously with the increase of Li2O content.

研究结果表明：Li2O和Na2O总含量为3.6%，其中Li2O含量为1.8%时，微晶玻璃以α-堇青石为主晶相，热膨胀系数为5.11×106 ℃，微波频率下介电常数ε r为5.5，介电损耗tan σ为2.1×104；随着Li+对Na+的取代，玻璃的析晶能力增强，初始析晶峰温度从950 ℃降至900 ℃左右，但没有降低第二析晶峰温度；随着Li2O含量增加，热膨胀系数及介电损耗都出现明显的混合碱效应，曲线呈现先降低后升高的变化趋势；样品的介电常数随Li2O含量增加单调降低。

Then, the effects of the agent dosage and the dyeing temperature on the dyes fixation values, the dyeing time on the color depth of the fabric and the alkalis after-treatment on dyes fixation values have also been studied. After it, we have tested the dyes fastnesses.

同时本文还探讨了匀染剂对活性染料的匀染性和固色率的影响、羊毛氯化不匀时对染色遮盖性的影响以及对氯化羊毛毛尖及毛根染色现象的影响，据此筛选出了适合所选染料染色的匀染剂。

PVC is characterized by high physical properties and resistance to chemical attack by strong acids and other oxidizers, alkalis, salt solutions, some organic chemical solutions, and many other chemicals.

PVC具有很好的物理特性，和耐强酸和其它氧化剂、碱、盐溶液、一些有机化学溶液，以及其它许多化学物质腐蚀的特性。

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。