查询词典 rare earth metal

Based on the investigation of a large amount of the related academic literatures at home and abroad, a series of new heat-resistant magnesium alloys have been investigated based on AE41 alloy by Ca and Si alloying as well as substituting LPC mixed rare-earth metal for Di mixed rare-earth metal in this paper.

在阅读分析国内外相关技术文献的基础上，本文以AE41合金为基础，通过Ca、Si元素的微合金化以及用无钕的LPC稀土替代稀土Di，以获得常温力学性能相当于和150℃～175℃耐热性能优于AE42的廉价镁合金。

The thesis toke problem of deformation and destroying of the earth mass as it's invention, integrated the earth mass's existing environment, ingredients and macrostructure, discovered mechanism of deforming and destroying, made clear the relationships between those.Through outdoors samples, indoors examination surface wave testing and audio wave testing ,do some research on physical, mechanical, chemical, disintegrative and dynamics property of stuff of earth mass and proposed four kinds of earth mass's stuff formed type;under the guidance of theory of dominant structural surface and adopting precision measurement of structural surface, proposed three dominant kinds of structural surface assembling;based on those , proposed four types of earth mass's deformation and destroying, carried out rationed estimation of stability on four types, then definite the characters of deforming and destroying and controlled relation between environment , stuff, macrostructure and deformation and destroying of mass earth, and breakthrough ordinary principle about soil's deformation and destroying, further proofed the theory of earth mass cybernetics's popularization

本学位论文针对台地危险土体的变形破坏问题，将土体的赋存环境、土体物质组成和土体宏观结构的研究紧密地结合，阐明了土体变形破坏的机制，明晰了土体变形破坏与土体的赋存环境、土体材料组成、土体宏观结构三要素之间的关系，并从土体的物质组成的角度，以野外取样、室内实验、现场面波、声波无损伤测试为手段，研究了土体物质的物理、力学、化学、矿物、崩解性、动力学性质，提出了研究区内土体物质成分的四种组合形式；以优势结构面理论为指导，以结构面的精确测绘为手段，通过统计、归纳与分析，提出三种有利于台地危险土体变形破坏的优势组合形式；据此提出了具有广泛代表意义的台地危险土体变形破坏的四种模式，并对其进行稳定性评价，从而明确了危险土体的宏观结构对变形破坏的控制作用，映证了土体结构控制论。

The anion-exchange ion chromatography is suitable for the separation and analysis of alkaline earth metal ions, transition metal ions and rare earth metal ions.

综述了离子色谱法分析金属离子的研究进展，对目前应用于分析金属离子的阳离子交换IC、阴离子交换IC和螯合离子色谱进行了评述。

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 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。

Numerical simulation results show that the fluid flow in Lost Foam Process was different from that in an ordinary green sand mold, the molten metal flow forwards in a circular-arc shape from the ingate, meanwhile, the nature of the gating system influenced the filling process notably. As the polystyrene pattern decomposition has a strong quenching effect on the flowing metal fornt, a high temperature gradient was formed at the flowing metal front, this resulted in the dropping of temperature of the metal to the liquidus temperature quickly and decreased the flowability of molten metal, the temperature distribution in the metal behind, however, was even. The properties of the pattern and the coating affected the temperature distribution remarkably.

从内浇口开始，金属液呈放射状均匀向前充填，同时浇注系统性质显著影响金属液充型过程的流场；由于聚苯乙烯模样气化吸热对金属液的激冷作用，在金属液流端部区域产生很大的温度梯度，使得端部区域金属液很快降至液相线温度，降低了金属液的充型能力，而后续金属液中温度分布则比较均匀，模样性能、涂料性能显著影响这一温度分布特点。

Based on the evaluation system, the plants whose relative remediation age was between 0~10 years were named as"Hyperaccumulator"and those between 10 ~ 50 years were named as"Accumulator".7 In the experiments six kinds of substrates were mixed with different solid wastes and the absorption and enrichment of plants on heavy metal Cd was studied. The results showed that relative remediation age was an ideal index to evaluate the capability of the phytoremediation on heavy metals, because it took into account more factors which affected the absorption evaluation effects than others, such as the heavy metal content and the biomass of the over-ground part of plants, the heavy metal content and the whole gross in substrates, harvesting frequency of plants and the environment standard of heavy metal. This made relative remediation age be suitable to the sorption capability evaluation of not only different plants on one heavy metal but also one plant on different heavy metals.8 It can be drawn from the relative remediation age of heavy metal Cd that the absorption capability of different plants was not same.

以相对修复年限为评价指标定义相对修复年限为0-10年的植物为"超富集植物"，10-50年的植物为"富集植物"。7在由不同废弃物按一定的比例混合配制的六种土地复垦基质上，系统地研究了几种植物对重金属镉的吸收和富集情况，结果表明，相对修复年限既适用于不同植物对同一种重金属元素的吸收能力的评价，又适用于同一植物对不同重金属元素的吸收能力的评价，是衡量重金属元素植物修复效果的理想指标。8从不同植物对同一基质重金属镉的吸收和富集能力看，不论是经过多年种植的基质，还是第一次种植的基质，小白菜和油菜都是相对理想的植物；而黑麦草、高羊茅和苜蓿的吸收效果并不理想。

Is only a small number of China metal powder injection molding one of the manufacturers, Main production PM powder metallurgy, powder injection molding, Precision Casting, metal structural parts, metal accessories, gears, Sleeve Bearing, precision components profiled complex, non-standard conditions, including : Sleeve Bearing, oil bearings, bushings, flanged connecting sleeve; Double gears, bevel gear, Pulley, synchronous wheel, sprocket, AK47 toy gun gear, various micro-precision gear drive; PM microporous filters, filter tubes, mufflers and filtration materials, Copper filters, stainless steel trap; mixer blades, coffee machine cutter heads Soymilk Machine grinding pieces Juicer blades, Juice blades, and household electrical appliances, metal accessories; Oscillator phone, cell phone parts and notebook parts; Metal keys, ATM machine keys; Toys accessories, fiber accessories; various copper, iron, and stainless steel products, alloy products; automobiles, motorcycles, machine tools, electrical machinery and office equipment, medical equipment and other types of machinery, electrical appliances, electric / pneumatic products within the precision components; Industries products within the structure of precision metal parts!

其中包括：烧结含油轴承、轴套、粉末冶金铜套、含油杯士、法兰、衬套、偏心含油轴承、球形含油轴承；粉末冶金齿轮、双联齿轮、伞齿轮、锥齿轮、同步皮带轮、链轮、棘轮、扇齿轮、双层齿轮、多层齿轮、直齿轮、斜齿轮、各类精密传动齿轮；粉末冶金烧结微孔过滤器、烧结过滤片、粉末冶金滤芯、滤筒、滤管、消声排气节流阀、青铜烧结过滤器；搅拌机刀片、绞肉机圆盘刀片、十字绞刀、铰刀盘、圆孔板、胡椒研磨件、豆浆机刀片、榨汁机刀片、果汁机刀片、咖啡机刀片、磨豆机刀片、家电五金配件；凸轮、凹轮、偏心轮、摆砣；手机振子、手机零件、笔记本零件；金属按键、ATM机按键；玩具配件、光纤配件；各种铜基、铁基、不锈钢制品、合金制品；汽车、摩托车、机床、电机、办公器械、医疗器械及其他各种机械、电器、电/气动产品内的复杂异形精密零件、非标准件；各行业产品内部用的精密金属结构零配件、五金配件。

240V and 50Hz Luer lock-type reusable needles, metal hub,18 gauge, 40mm, box of 100 Luer lock-type reusable needles, metal hub, 16 gauge, 25mm, box of 100 Luer lock-type reusable needles, metal hub, 14 gauge, 25mm, box of 100 Luer lock-type reusable needles, metal hub, 20 gauge, 30mm, box of 100 Intravenous catheters, 16 gauge, 50mm (2"0) 3 litre intravenous fluid administration bags, with attached tube Simplex IV Bell or equal, high quality latex, 10cm (4") Tubing Kelley Forceps 14 cm, curved Capacity 1 litre, max 1,000 rpm Mayo Dissecting Scissors 14 cm, curved, standard bevelled blades or equal Metal pre-set multi-dose syringe to deliver 0.1ml, with accessories and spares Batch operation for food/meat Portable, for internal determination of foreign bodies in livestock, and magnetic retractor Multi-dose Syringe, 30 ml capacity, adjustable dose of 1-30 ml Henke Vetmatic metal multi-dose syringes, capacity 10 ml with tube feed Nasogastric tubes, 13mm (1/2) outside diameter abd 2.5m (8 feet) long 'Record' type intr-dermal needles as recommended for mclintock syringe or similar Oral dosing syringe for deworming connect various sizes of supply bottles, adjustable dose of 1 to 50 ml Parasite control sprayer back-pack, minimum capacity 10 litre, hand pump for pressure delivery without taking off back.

- 240V的和50 Luer锁型可重复使用的针头，金属枢纽， 18针， 40毫米， 100盒 Luer锁型可重复使用的针头，金属枢纽， 16个指标， 25毫米， 100盒 Luer锁型可重复使用的针头，金属枢纽， 14个指标， 25毫米， 100盒 Luer锁型可重复使用的针头，金属枢纽， 20个指标， 30毫米， 100盒静脉导管， 16个指标，使用50mm （ 2 & 0 ） 3升静脉输液袋，附有管单纯四贝尔或等于高品质乳胶， 10厘米（ 4 &）油管凯利钳十四厘米，弯曲容量1公升，最大转速1000 梅奥解剖剪刀14厘米，弯曲，标准斜切刀片或等于金属预先设定多剂量注射器提供0.1毫升，与配件和备件批量操作的食物/肉便携式，内部确定异物牲畜和磁缩多剂量注射器， 30毫升的能力，可调节剂量的1月30日毫升亨克Vetmatic金属多剂量注射器，容量10毫升管饲料鼻饲管， 13毫米（ 1 / 2 ）外径阿卜德250 （ 8英尺）长'记录'类型中断真皮针头作为建议麦克林托克注射器或类似口服注射器的驱虫连接各种尺寸的供应瓶，可调剂量为1至50毫升寄生虫控制喷雾器回包，最小容量10升，手泵的压力下交付起飞返回。

A circle shear device for cutting holes in sheet metal as in claim 1 wherein: a said upper center shaft includes a first platform member disposed rotatably connected adjacent a lower end of said upper center shaft for supporting a top surface of said provided metal sheet; b said lower center shaft includes a second platform member disposed rotatably connected adjacent an upper end of said lower center shaft for supporting a bottom surface of said provided metal sheet; and c said upper and lower support platform members engaging top and bottom surfaces of said provided metal sheet to prevent metal sheet movement when said cutter wheels are brought into shearing contact with said provided metal sheet.

一个圈剪切装置切割孔金属板材作为权利要求1 ，其中： A ）表示，上中心轴，包括第一次会员平台弃置rotatably连接相邻较低月底上说，中心轴为支持一个顶面的表示，提供金属板材； B ）表示，较低的中心轴，包括第二个平台会员弃置rotatably连接相邻上月底表示，较低的中心轴为支持一个底部表面的说，提供金属板材； C ）表示，上，下支撑平台成员从事顶部和底部表面的表示，提供金属板，以防止金属板运动时说，刀车轮被带入剪切接触说，提供金属板材。

Just so you know where we're going...

只要让你知道我们的目标。。。

One of his friends acted as the gobetween in his business.

在这件事中，他的一个朋友充当了中间人。