铅板

The purpose of the study is to investingate the feasibility of closed-microwave method instead of traditional aqua regia hotplate reflux method for heavy metal determination in soil.

中文摘要本研究利用密闭微波法消化土壤，并以火焰式原子吸收光谱法分析镉、铜、铅、锌四种金属元素，目的在探讨以密闭微波法取代传统王水热板回流消化法，测定土中重金属之可行性。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tiles, slates, asbestos cement, tar felt, asphalt, lead, copper , zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

Our process capability: Plates: FR4, High TG FR4, high CTI FR4, high frequency materials, halogen-free materials, aluminum and other low-rise Materials :2-20 layer of finished copper thickness :0.5-5 OZ finished thickness: 0.2 -6.0mm Minimum line width: 3mil Minimum line spacing: 3mil smallest shape tolerances:+/-0.1mm minimum finished diameter: 0.1mm maximum thickness aperture ratio: 12:1 wide minimum solder bridge: 4mil characters minimum line width: 5mil Minimum height of characters: 30mil Solder Mask Color: Green, black, blue, white, yellow, purple characters such as color: white, yellow, black and other surface processes: spray tin, lead-free HASL, Electroless gold plating Shuijin, OSP, chemical Shen tin, silver and other chemicals Shen Process: Goldfinger, blue gum, Blind-via/Buried-via, characteristic impedance control, rigid-flexible combination of reliability testing such as: Open / Short testing, impedance testing, solderability testing, thermal shock testing, metallographic analysis of micro-slice curvature Isoptera: 0.7% flame retardant Level: 94V-0

我们公司的制程能力：板材：FR4、高TG FR4、高CTI FR4、高频材料、无卤素材料、铝基材料等层数：2-20层成品铜厚：0.5-5 OZ成品板厚：0.2-6.0mm最小线宽：3mil最小线间距：3mil最小外形公差：+/-0.1mm最小成品孔径：0.1mm最大板厚孔径比：12：1最小阻焊桥宽：4mil最小字符线宽：5mil最小字符高度：30mil阻焊颜色：绿色、黑色、蓝色、白色、黄色、紫色等字符颜色：白色、黄色、黑色等表面工艺：喷锡，无铅喷锡、化学沉金、电镀水金、OSP、化学沉锡、化学沉银等其它工艺：金手指、蓝胶、盲埋孔、特性阻抗控制、刚柔结合等可靠性测试：开/短路测试、阻抗测试、可焊性测试、热冲击测试、金相微切片分析等翅曲度：≤0.7%阻燃等级：94V-0

The excessive use of paper and Board have quantitative and qualitative filter paper filter paper, filter paper, non-concenrated heatsealing-tea, chromatography concenrated, concenrated, industrial oil filter paper velcanized, J-140 oil filter paper, WJ-140 oil filter paper, J-85 oil filter paper, concenrated, diesel 5um fine C-170 diesel concenrated, diesel, filter-concenrated velcanized WC-150-paper, HM－180 aviation fuel filter paper, concenrated, concenrated, J－180 cotton gum gum concenrated M－150 cotton, non-leaching 530 concenrated, heatsealing concenrated, tea-K-120 air concenrated, concenrated, K-280 air K-80 air concenrated, 1＃ concenrated, concenrated, no. 2, no. 1, no. 2, micro-micro-concenrated, concenrated, 3＃ concenrated, 01Service, micro-luftfilter paper, 02 luftfilter paper, no. 03 luftfilter paper, 04, 05 luftfilter paper, luftfilter paper, S-06, luftfilter paper, desert air concenrated concenrated, MH-530, concenrated, C-180 1.5th-reliable gold cotton concenrated diesel concenrated, NC－220, concenrated, beer wrinkles 220 filter paper, in addition to the gingivalis concenrated, glass fiber filter paper, milk filter paper, jungsoo paper, mtastasis filter paper, precision grinder concenrated concenrated, hydraulic oil, activated carbon filter paper, activated carbon for radioactive gas concenrated CA、doped etrieve concenrated WG-59, corrugated paper, oil and gas separation and filtration of filter paper, slot filter paper, smoke meters with a filter paper, lead filter paper, high-temperature air filter paper, ion-exchange resin concenrated, concenrated, cationresin fiber is not removing bacteria-pingment shimian filter plate, pingment removing bacteria-net filter plate, pingment removing bacteria-net filter plate, concenrated SI wrinkles, high efficiency filter Corrugating medium, 69-gas mask filter paper, 69-clean air concenrated, 49-clean air concenrated, 0.1um concenrated, the rituals associated with high efficiency air wrapping paper, three concenrated.

过虑用纸和纸板有定量滤纸、定性滤纸、滤芯纸板、非热封型茶叶滤纸、色层分析滤纸、工业滤纸、机油滤纸原纸、J-140机油滤纸、WJ-140机油滤纸、J-85机油滤纸、5um细柴油滤纸、C-170柴油滤纸、柴油滤纸原纸、滤油纸、WC-150燃油滤纸、HM－180航空滤纸、J－180棉胶滤纸、M－150棉胶滤纸、未浸530滤纸、热封型茶叶滤纸、K-120空气滤纸、K-280空气滤纸、K-80空气滤纸、1号滤纸、 2号滤纸、1号微滤纸、2号微滤纸、3号微滤纸、01号空气过滤纸、02号空气过滤纸、03号空气过滤纸、04号空气过滤纸、05号空气过滤纸、S-06 号空气过滤纸、沙漠空气滤纸、MH-530滤纸、1.5棉机滤纸、C-180金子棉柴油滤纸、NC－220滤纸、皱纹220滤纸、啤酒过滤纸、除菌滤纸、玻璃纤维过滤纸、牛奶过滤纸、净水纸、癌细胞过滤纸、精密磨床用滤纸、液压油滤纸、活性炭滤纸、放射性气体测定专用活性炭滤纸、含合成纤维滤纸、无波纹板 WG-59过滤纸、油气分离过滤纸、缝隙过滤纸、烟度计用滤纸、铅烟过滤纸、耐高温空气过滤纸、离子交换树脂填充滤纸、阳离子交换纤维滤纸、未涂膜除菌型石棉滤板、涂膜除菌型液净滤板、未涂膜除菌型液净滤板、SI皱纹滤纸、高效滤清器瓦楞原纸、69型防毒面具过滤纸、69型净化空气滤纸、49型净化空气滤纸、0.1um高效空气滤纸、泡茶包装纸、三滤纸。

The results show that there are mainly lead、zinc、 CuZn〓、FeZn〓 and four phases in hard—zinc: zinc—lead solid salution of saturation lead、lead—zinc solid solution of saturation zinc、high iron multicomponent solid solution and high arsenic multicomponent solid solution.

且硬锌中有四相存在：饱和铅的锌铅固溶体、饱和锌的铅锌固溶体、高砷多元固溶体和高铁多元固溶体，其中铁锌固溶体为白色板条状结晶，砷化合物为灰微带棕色粒状物。

Xamples of specific articles are a grid, a filter, a graticule, a mesh, a light chopper disc, a heat sink plate, a heater element, a screen, colour TV mask, a diaphragm, a shim, a gasket, a washer, a spring, a cog, a link, a probe, a magnetic recording head, a circuit lead frame, an encoder disc, an item of jewelry, a rule, a scale, a clutch plate, an emitter contact, a micro reactor, a suspension lead, an ink jet nozzle plate, a stencil, a razor foil, a bearing, an edge filter, a logo, a nameplate, a decorative plaque, an instrument case, a box, an enclosure and a potentiometer case made by the process of the present invention.

specially preferred articles are those wherein the etchant fully penetrated the metal or alloy in the article具体条款的例子有一个网格，过滤器，一标线，一个网格，一辆轻型直升机光盘，散热片板，一个加热元件，屏幕，彩色电视面具，膜片，一个垫片，垫圈，洗衣机，春天，一个齿轮，一个链接，一个探测器，磁性记录磁头，电路引线框架，编码器光盘，一饰物，一种规则，一个规模，一个离合器片，一个发射联络时，微型反应堆，项目一暂停铅，1喷墨喷嘴板，模具，剃须刀片，轴承，一个边缘滤波器，一个标志，一个铭牌，装饰牌匾，一个仪器的情况，一个盒子，一个外壳和一个电位案件过程中作出了本发明的。

The authors studied the effects of the following factors on initial starting performance of dry-charged batteries:grid alloy composition,physico-chemical performance of leady oxide ;acid volume in paste,lead paste;pasting and curing of green plates.

作者通过一系列试验，从合金配方、铅粉理化性能、铅膏加酸量、涂板方式及生极板的固化对干荷电铅蓄电池的首次起动性能的影响进行了研究。

VRLA battery uses lead calcium alloy for grid and lead tin alloy for strap, the COS process more likes soldering, COS of lead-tin strap is difficult and needs flux and tinning.

VRLA电池使用铅钙合金板栅和铅锡合金汇流排，其制造过程更像是钎焊。铅锡合金汇流排铸焊过程须使用助焊剂和搪锡。

Lead-acid battery ; grid ; lead-silver ; lead-silver-lanthanum alloy ; electrochemical behavior

铅酸蓄电池；板栅；铅银；铅银镧合金；电化学性能

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。