碱土金属

FGD gypsum further into α-form calcium sulfate hemihydrate by heating in an aqueous solution consisting of some alkail earth metal salts and sulfuric acid or chlorhydric acid at the atmospheric pressure has been studied in this subject.

FGD残渣在碱土金属盐类的盐溶液中，在丁二酸、丙三醇等结晶改良剂的作用下，与大气压下加热脱水生成α半水石膏。

Indices~ mP 0 and 1 were fitted, respectively, with the heat of formation,ionic hydration energy, lattice energy ,internuclear distance bond lengthof 20 kinds of alkali halides; with the lattice energy of 20 kinds of alkali-earth metal halides,with the ionic hydration heat of 51 kinds of metals, and with the ionic standard heat of formation of 80 kinds of i.

用mP的0和1阶指数分别与20种碱金属卤化物的生成焓ΔfH m、离子水化能ΔhG m、晶格能U1、气态碱金属卤化物核间距R0，20种碱土金属卤化物的晶格能U2，51种金属离子水合焓ΔhH m关联，拟合的回归方程的相关系数为m和80种离子标准生成焓ΔfH 0.9753(0.9834)、0.9761(0.9816)、0.9964(0.9986)、0.9967(0.9967)、0.9789(0.9890)、0.9901和0.9805，满足优级或良级标准。

With alkali-voron-silicon as the basis and addition of alkaline earth composite fluxing agent,a kind of leadless fluxing agent is developed.

以碱-硼-硅系统为基础，加入碱土金属氧化物复合助熔剂，研制无铅釉上彩熔剂。

The performances of leadless and cadmiumless fluxing agents for overglaze colors were studied based on alkali-boron-silicon fluxing agent system.

用正交实验法研究了在碱-硼-硅系统基础熔剂中，外加助熔助色成分MgO、CaO、SrO、BaO四种碱土金属氧化物的添加量及R2O：RO、SrO：CaO、RO：SiO2对无铅无镉釉上彩熔剂性能的影响规律。

Based on alkali- boron- silicon system, a compound function of several alkali metals, alkaline- earth metals and admixtures is used to replace that of lead to develop environment- friendly, leadless flux for overglaze colors with low bismuth content.

在碱-硼-硅系统基础熔剂中引入外加剂，通过多种碱金属、碱土金属及外加剂等复合效应来代替铅在熔剂中的作用进而研制低铋环保型无铅熔剂。

A preparation method of nickel oxide-base cathode of fused carbonate fuel cell is to select alkali earth metal oxide, transition metal oxide and rare-earth metal oxide, mix with carbonyl nickel powder in the proportion of 0.01-15.00 mol%, add assistant and mix even into a slurry; after the slurry is formed into a biscuit by doctor-blade casting, sinter it into a multi-porous nickel plate; dissolve lithium nitrate and cobaltous nitrate with mole ratio of Li:Co-1:1 and citric acid or PVA in the distilled water to make a solution with Li of 0.00-0.5 mol/L; immerse the multi-porous nickel plate or nickel oxide plate in the solution, keep for 10-60 minutes under vacuum below 200 millibar, then dry in an oven at 75 degrees centigrade further transfer to a crucible electric furnace preheated 650 degrees centigrade for keeping the temp.

要約 熔融碳酸盐燃料电池氧化镍基阴极的制备方法属于燃料电池领域。选取碱土金属氧化物、过渡金属氧化物和稀土金属氧化物，按0.01－15.00mol％的比例与羰基镍粉混合，加入助剂，混合均匀成浆料；混合浆料流延成型为素坯后烧结为多孔金属镍板；将摩尔比为Li∶Co＝1∶1的硝酸锂和硝酸钴以及柠檬酸或聚乙烯醇溶于蒸馏水中，制成为0.005－0.5mol/L的溶液；将多孔金属镍板或氧化镍板浸入溶液中，在真空度低于200毫巴下保持10－60分钟；置于75℃的烘箱中烘干，转移至预热到650℃坩埚电炉中保温1－10小时；将此过程重复一次或多次即可。

In the alkali-boron-silicon system basic fluxing agent,we use the combined effects of alkali metals,alkali earth metals and admixture s to replace lead,in order to produce environment-protecting unleaded fluxing agent for overglaze colors with low bismuth.

在碱-硼-硅系统基础熔剂中引入外加剂，通过多种碱金属、碱土金属及外加剂等复合效应来代替铅在熔剂中的作用进而研制低铋环保型无铅熔剂。

Stone, Whether Or Not Roughly Trimmed Or Merely Cut By Sawing Etc.,Readymade Garment and underwear,Building materials and supplies,Refractory Bricks, Blocks And Similar Refractory Ceramic Constructional Goods, Except Those Of Siliceous Fossil Meals Or Similar Siliceous Earths,Hydrometers, Thermometers, Pyrometers, Barometers, Hygrometers And Psychrometers Etc.; Parts And Accessories Thereof,Converters, Ladles, Ingot Molds And Casting Machines Used In Metallurgy Or In Metal Foundries, And Parts Thereof,Lathes For Removing Metal, Including Turning Centers,Machine Tools, Other Than Lathes, For Drilling, Boring, Milling, Threading Or Tapping By Removing Metal,Machine Tools For Deburring, Honing Or Otherwise Finishing Metal Or Cermets By Means Of Grinding, Abrasive Or Polishing Products, Nesoi,Machine Tools For Planing, Shaping, Broaching Etc., Gear Cutting, Gear Finishing Etc., And Other Machine Tools Working By Removing Metal Etc., Nesoi,Pig Iron And Spiegeleisen In Pigs, Blocks Or Other Primary Forms,Iron And Steel 0 Z' W {-~!

主要进口商品：非电热工业或实验室用炉及烘箱〔包括焚烧炉〕，金属铸造用型箱；型模底板；阳模；型模等；其它金属、金属陶瓷、玻璃、矿物、橡胶和塑料模具，实验室、化学、农业、运输等用陶瓷器，碱金属、碱土金属；稀土金属、钪及钇；汞，花岗岩、玄武岩、砂岩等建筑用石，成衣及内衣，建筑材料及供应品，耐火砖、块、瓦及类似耐火陶瓷建材制品〔但硅质化石粉或类似硅土制的除外〕，液体比重计、温度计、气压计、湿度计等及其零附件，金属冶炼及铸造用转炉、浇包、锭模及铸造机及其零件，切削金属的车床〔包括车削中心〕，切削金属的钻床、镗床、铣床、攻丝机床〔车床除外〕，其它金属或金属陶瓷的磨削、研磨、抛光等精加工机床，切削金属的刨床、插床、拉床、切齿机及其他机床，生铁及镜铁，锭、块或其他初级形状，钢铁

The content of kaolinite varies in the range of 80%to 95%.Two occurrences of kaolinite are rev ealed:one is in the form of aggregate of vermiform crystals;another is in the form of cryptocrystalline or colloidal materials.Its crystallization index is calculated to be 0.54～0.74a nd 0.47～0.53,indicating its higher degree o f order.Chemical analyses show that the compositions of kaolinite are close to its theoretical values.

光学及扫描电子显微镜、 X射线衍射分析和红外分析等系统性研究的结果表明，高岭石主要有两种存在形式，一种呈蠕虫状集晶，另一种是隐晶质或胶状高岭石，测得其结晶指数分别为 0.54～ 0.74和 0.47～ 0.53，说明其有序度偏高；化学分析结果表明，其化学成分接近于高岭石的理论值， Al2O3含量达 35%～ 37%， SiO2含量为 47%～ 48%，碱金属、碱土金属及其他氧化物含量很低。

The results showed that it is feasible to synthesis the rare earth alkoxide by taking the alkaline earth alkoxides as the providers of alkoxy.

结果表明，以碱土金属醇盐为烷氧基提供者制备稀土金属醇盐是可行的。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。