酸碱的

In order to determine the carbonation interface properly, Alizarin yellow R is chosen as the acid base indicator.

研制了新的具有球形凹面的混凝土试块及相应模具，实现了混凝土碳化试块的非破坏测试；选择了茜素黄R作为酸碱指示剂，合理地确定了检测时的碳化界面。

By analyzing the differences between acidic and basic catalytic action in this transesterificatios, it is considered that the main cause of yielding an anisole by-product is due to the basic catalysis, a Lewis acidic catalyst is helpful for the selective DPC formation.

通过分析酸碱催化作用在酯交换反应中的差异，认为碱催化是副产物苯甲醚生成的主要原因，Lewis酸性的催化剂有利于碳酸二苯酯的高选择性。

This company produces stops itches the scented soap, uses the sod biological activity material hyperoxide mutase, blends the chinese medicine extraction to stop itches the factor bee glue, the honey and so on, can the effective elimination in vivo ultra oxygen anion free radical, have the unique effect to the old age skin pruritus, after taking a bath, can cause the skin moisturizer not dry, not to stimulate the skin, not to have the unusual smell, can protect the skin, the crisp body effectively, causes the skin to achieve the acid-base equilibrium, to stop itches, the sterilization, run skin's function, is the senior citizen bathes daily the skin care standing-by wash thing.

止痒香皂，采用 sod 生物活性物质超氧化物歧化酶，配伍中草药提取止痒因子蜂胶、蜂蜜等，能有效的清除体内的超氧阴离子自由基，对老年皮肤瘙痒症有独特功效，洗浴后能使皮肤保湿不干燥、不刺激皮肤、无异味，能有效呵护皮肤、爽身，使皮肤达到酸碱平衡、止痒、杀菌、润肤的作用，是老年人日常沐浴护肤的常备洗涤用品。

According to this point it has good ability to absorb neutron and resist eradiation.Because of their high hardness and strength, excellent wear and corrosion, low density, low friction coefficient good self-lubricate and high temperature properties both silicon carbide and boron carbide components have been widely used in many industries.

由于碳化硼中的B14中子缺失，它还具有较大的热中子俘获截面，具有极好的中子吸收和抗辐射性能，由于其具有耐高温，耐酸碱腐蚀，高强度，高化学稳定性，比重轻，半导体等特点而成为众多行业的首选材料。

The authors analysed naked and transformed groups of fibrous brucite, wollastonite, chrysotile asbestos, sepiolite, palygorskite, clinoptilolite, crocidolite and diatomaceous earth mineral dust s by IR under acid and alkali etching and strong mechanical and polarized molecular interaction.

本文通过酸碱蚀、强机械力和极性分子等表面作用，利用红外吸收光谱手段分析7种重要矿物粉尘的表面基团裸露、转化过程，总结了矿物粉尘表面存在的基团类型及其表面活性位的分布及在不同环境条件下的转化，对讨论粉尘生物活性及矿物表面／细胞物理化学作用过程有重要意义。

Electrokinetic transport process could promote effectively the desorption and migration of phenol and 2,4-dichlorophenol in soil; electromigration and electroosmosis were the main mechanisms; and the .

结果表明，电动力学过程能有效地促进土壤中苯酚及2，4-二氯酚的解吸附和迁移，电渗析和电迁移是其主要的作用机理，其迁移效果与电动力学形式、污染物类型、土壤酸碱性质和电极反应等密切相关，可以采用适当的电动力学工艺修复含酚类化合物的污染土壤。

The optimal conditions through testing of defoaming performance and foam suppressing performance are:reaction temperature at 100 ℃;for 10 h;the mass ratio of polyether to hydrogenous silicone oil is 15∶1 and the dosage of catalyst is 0.2%.

聚醚改性聚硅氧烷消泡剂是将聚醚和有机硅消泡剂两者的优点有机结合起来的一种新型高效消泡剂，由于其消泡效力强，且其耐热性、抗剪切性及耐酸碱盐性能好，加之还具有无毒无味、贮藏稳定及使用方便等优点，因而被广泛用在各种场合，特别是用于许多苛刻条件下的消泡，比如纺织品高温染色工艺、发酵工艺中的消泡[1]，但是此类消泡剂在我国还处于研制阶段，很

The experimental results show that the yield of the maleic anhydride is maximum when the molar ra_tio of vanadium pentoxide to molybdenum trioxide is equal to about two and the quantities of vanadium are nearly five times more than those of phosphorus.

实验表明：以氧化铝为载体用于苯氧化制顺酐的五氧化二钒催化剂，当五氧化二钒与三氧化铝的摩尔比为2左右和钒磷比约为5时，顺酐的收率最大，并根据催化剂的半导体电子理论和酸碱理论进行了解释。

The acidity of Lewis acid sites and the basicity of Lewis base sites influence the intensity between water, 1,2-dichloropropane and catalyst. The specific area of catalyst influences the capacity of adsorption.

催化剂Lewis酸位和Lewis碱位的酸碱强度直接影响水、1，2－二氯丙烷与催化剂的作用强度，而催化剂的表面积直接影响吸附量。

In addition, in-situ infrared spectroscopy provides the information about the nature of the surface acid and base sites. For example, Lewis acid and base sites on metal oxides are coordinatively unsaturated metal cations and oxygen anions, respectively, while Brinsted acid and base sites are the hydroxyl groups on the surface.

结合原位红外光谱，还能够详细地了解表面酸碱中心的性质：金属氧化物表面的Lewis酸中心和碱中心分别是表面配位不饱和的金属离子和氧负离子， Brinsted酸中心和碱中心则是金属氧化物表面的羟基。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。