查询词典 metal working

A theoretical model is built to investigate the simulation of the infrared characteristic of the metal structure with the PCM false target.Structure parameters of the PCM false target that suit for the simulation are investigated numerically.According to the results,further request on the improvement of the thermal conductivity of PCM is presented.An experimental platform is built and the numerical model is validated experimentally.Three key thermal characteristic components of the false tank(barbette,wheel and front armor plate) are manufactured and tested,and good results are obtained.A method for the thermal conductivity enhancing of PCM by using aluminum fins is studied,the influence of the structure parameters of PCM plates to the simulation effects are investigated numerically,and the reasonable configuration parameters of the PCM plates used to simulate the steel plates of different thickness are obtained.In the study of the application of heat convection method in IR false target,a passive infrared simulation system is designed to simulate the infrared characteristic of metal constructions.The system is made up of pipe-plate,pump,receiver,and working fluid.

在相变材料应用于红外示假的研究中，通过数值模拟，研究确定了适用于制作假目标的相变材料各物性参数的范围，分析了相变材料制作假目标的可行性，并根据所得结果，选取石蜡为研究对象，建立了相变材料模拟金属构件红外特征的理论模型，研究了适用于模拟各金属构件红外特征的相变材料假目标的相关结构参数，得出了相变材料假目标模拟各金属构件红外特征的理论结果，并对相变材料的导热系数这一物性提出了进一步的改进要求；搭建了假目标实验平台，验证了所建理论模型的准确性；以坦克假目标为研究对象，制作了炮塔、负重轮和前上装甲板三个坦克假目标的关键红外热特征部件，并进行了野外实验，取得了较好的结果；以添加铝肋片作为改进相变材料导热能力的手段，理论研究了此类导热增强型相变材料的相关结构参数对模拟效果的影响，得出了模拟不同厚度钢板红外特征的导热增强型相变材料的结构参数及模拟效果。

Working characteristic of Fe-based metal glass Fe36Co36B20Si4Nb4 core, the relationship of frequency, field current and induced voltage, the relationship of magnetic permeability and input frequency were studied. Effective magnetic permeability of Fe-based metal glass Fe36Co36B20Si4Nb4 as mutual iron core was measured using mutual induction method.

研究了Fe36Co36B20Si4Nb4铁基环状金属玻璃作为互感器铁芯材料的工作特性，即频率、励磁电流与感应电压之间的关系；磁导率与输入频率之间的关系，并采用互感方法测量了铁基金属玻璃Fe36Co36B20Si4Nb4作为互感器铁芯的有效磁导率。

Ans 1 Yes, we can get job visas working permit visas for 4 years only for the following categories, Medical Practitioner, Registered Nurses, Registered Midwives, Pharmacists, Chef, Automotives Electrician, Fitter, Furniture Upholsterer, Motor Mechanic, Hairdressers, Panel Beater, Pastry Cook, Toolmaker, Vichicle Painter, Welder (first Class, Refrigeration and Airconditioning Mechanics, Metal Fabricator, Metal Machinist, General Garden Work.

是答1，我们能有工作签证工作许可证签证适合4 年只适合下列种类，开业医生，领有执照的护士，注册助产士，药剂师，主厨，汽车电机师，剪裁和试样的裁缝，家俱室内装饰商，电动机技工，理发师，小组打击者，糕饼库克，Toolmaker，Vichicle 画家，焊工(一流，冷藏和 Airconditioning 力学，金属Fabricator，金属机械师，一般的花园工作。

This paper is reviewed for importance of gas media used in ceramic-to-metal seal technology, it point out that increasing N2 content of working Gas media made ceramic-to-metal seal safe production, decreeing cost and guarantee quality.

本文所研究的基于气体介质的电火花铣削加工技术主要指气中电火花铣削加工以及相应的超声辅助气中电火花铣削加工和浸液辅助气中电火花铣削加工。

Chinese Central Army Battle Of Shanghai 1937 full Gear and Uniform set. Comes with Metal Sabre with Leather Sheath, Metal Helmet with Leather Lining, Service Cap With Sun Insignia and Buttons, Mauser Pistol with 8 working parts, Wooden Handle Grenade With Metal Screw Cap And Fuze, Wooden Stock With Pistol, Metal Canteen with Cork Cap and Cotton Strap, Hand made convas shoes.

1937年上海会战时的中央军，此款包含有全部的装备和制服：金属的马刀和皮革的刀鞘、金属的头盔带皮革衬里、军帽上有青天白日徽章、毛瑟枪可分解成8个部件、手榴弹手柄是木质的并配有金属的保险帽以及引信、手枪的手柄是木质的、军用水壶配有软木塞和棉织的背带、手工缝制的布鞋。

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 results reveal that spectra obtained by different parametric methods are similar. The spectra of normal cells' voltage have only one noticeable lobe due to fluctuation of molten alumina at anodes, while spectra of other abnormal cells have one mainlobe and one sidelobe. In cells with carbon in bath the spectral mainlobe of cell voltage is still due to the fluctuation of molten alumina at anodes and the sidelobe is due to the fluctuation of carbon in bath; in cells with metal pad wave, the spectral mainlobe is due to metal pad waving and the sidelobe is still due to the fluctuation of molten alumina at anodes. Compared with wavelet packet analysis, spectral analysis is simpler and takes less time in calculation, which is a big merit in the large-scale application of online diagnosis systems of working conditions in aluminum reduction cells.

研究结果表明：不同的参数估计法得到趋于一致的频谱分析结果，正常槽只有1个尖锐谱峰，对应于阳极下熔融氧化铝涌动的特征峰，其他故障槽都有2个特征谱峰，即1个主峰和1个次峰，碳渣槽的主峰仍然对应着阳极下熔融氧化铝涌动特征峰，次峰对应悬浮碳渣的涌动特征峰；铝液波动槽主峰对应铝液波动特征峰，次峰对应着熔融氧化铝涌动的特征峰；频谱分析相对于小波包分析具有算法简单、耗时少、物理意义明确等特点，在槽况在线诊断系统的大规模推广中具有优势。

While centaur are accomplished bowyers and fletchers, they haven't quite mastered the arts of working metal; thus, most metal weapons and armor among centaur are stolen from other races.

虽然半人马是熟练的制弓匠和造箭手，他们还没有完全掌握冶炼金属的技术；因此，半人马大多数的金属武器和铠甲都是从其他种族那里盗取的。

"Forge: Open furnace for heating metal ore and metal for working and forming, or a workshop containing forge hearths and related equipment."

锻铁炉：一种用来加热金属矿石和金属以便加工和成形的敞口炉。

Apart from the working limitations resulting from its structural property, the flat plate heat pipe carries out heat dissipation through the evaporation and condensation of the working fluid. Thus, if the working angle of the fluid is adverse to its backflow, the heat pipe will fail easily. Furthermore, not the orientations of all the heat sources are favorable to the functioning of the heat pipe. To compensate for this drawback, this research focuses primarily on the development of a composite structure which will reduce the effect of gravity on the working fluid. Generally speaking, the heat pipe is divided into three main categories: the groove type, sintered metal type and mesh screen type, as shown in Table 2. As far as capillary force is concerned, the sintered metal type and mesh screen type show better performance. As mentioned in R.

平板式热管除了因其结构特性而产生的工作极限之外，由于其作用乃是透过工作流体的蒸发及凝结进行散热，故若是其工作角度不利于液体之回流，便容易使热管失效，且并非所有之发热源都是位于有利于热管工作之位置，因此本研究之主要目的为设计一可减少重力对工作流体影响之复合式结构；一般而言，热管之结构大致可分为沟槽、烧结及网格三种(如表2所示)，其中烧结及网格结构有较佳之毛细力，在 R。

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％。