查询词典 tungsten

According to the heavy-liquid separation test, the embedded granularity survey of tungsten minerals and shaking-table test of ore sample grading, the -0.7 mm granularity is determined to be selected for the gravity concentration test. The ores will be smashed below -0.7 mm . The useful minerals should not be excessively smashed. The reasonable technology procedure of ore grinding can guarantee the indexes of gravity concentration in a long length.

依据重液分离试验结果、钨矿物嵌布粒度结果及矿样分级摇床试验结果，确定重选试验的入选粒度为-0.7mm ，欲将矿石碎至-0.7mm 以下，又使有用矿物尽可能减少过粉碎，选择合理的磨矿工艺流程是确保重选指标的关键。

Since 2003 the company has been committed to the establishment of tungsten ore samples the improvement of quality of imports from the United States ICS a professional company were mining equipment, hydraulic diamond chain saws cutting machine and its auxiliary equipment.

公司自2003年成立以来一直致力于钨矿标本质量的提高，从美国 ICS公司进口了专业的标本开采设备，液压金刚石链锯切割机及其辅助设备。

From diamond post earrings, to tungsten wedding bands, to emerald gemstone jewelry and everything in between!

从钻石耳环后，以钨婚礼乐队，以祖母绿宝石首饰之间的一切！

The tungsten melting pot is used in SL63-7BL vacuum resistance furnace, and tantalum plate is used to gathering bulk,raw terbium metal is purified by distillation at the temperature of 1 750~1 800℃ with the vacuity of 5×10-3Pa.

在SL63—7BL真空电阻炉中使用钨坩埚，钽片做收集筒，在真空度为10-3Pa和1750￣1800℃温度下蒸馏提纯金属铽，工艺可靠，可以批量生产。

And EDM networks plate, nickel, titanium and other rare metals tungsten and molybdenum wire mesh products to fill the gap, reaching the advanced international level, access to a number of national patents.

及电火花筛板网，镍钨钼钛等稀有金属丝网产品填补了国内空白，达到了国际先进水平，获得了多项国家专利。

For the tungsten-copper metallic matrix composites having tailorable TC and CTE properties in certain range, this investigation aims at with discussion of composition design, preparing methods selection and process parameters optimization to develop the key technology of W/Cu composites materials processing.

鉴于钨铜金属基复合材料具有低膨胀及高导热的优异特性，并且上述性能在一定范围内可实现调节控制的特点，故本研究旨在通过成分设计、制备方法选择及工艺参数优化的深入探讨，研究其关键的制备技术并制备符合封装热沉要求的材料。

Hainan is rich in minerals, notably high-grade iron and tungsten, but also rich in titanium, manganese, salt, copper, bauxite, molybdenum, gold, silver, coal, cobalt, graphite, and crystal. Hainan's rich offshore fishing grounds provide shrimps, scallops, tuna, and Spanish mackerel, and pearls are harvested in the shallow bays surrounding the island.

海南富有矿物特别是高等级的铁和钨，也富有钛、锰、盐、铜、矾土、钼、金、银、煤、钴、石墨和水晶；海南岛拥有大量的渔场供应虾、扇贝、金枪鱼和马鲛鱼，同时在岛周围的浅海湾可以采集到珍珠。

H.C. Starck produces an assortment of refractory metal powders that is unique the world over, In addition to metal powders, semi-finished and finished molybdenum, tungsten, tantalum, niobium, titanium, zirconium and nickel products and their alloys are manufactured.H.C.

H.C。 Starck是全世界独占鳌头的生产一系列各种各样难熔金属粉末的生产商。除了生产金属粉末外， H.C。 Starck也生产钼、钨、铌、钛、锆、镍等的半成品和成品加工件以及它们的合金。H.C。

The use of mechanical seals, and do not have to fill, automatic mind, long life, wide parameters (pressure 15-30 kg / cm 2, temperature -50 ℃-450 ℃, to speed 0-500 /, media: conducting oil, steam , Water, air, etc.), is to address run, run, drip, leak, energy conservation, improve the working environment ideal for sealing components conducting oil rotating series of joint: in-house and the spherical shell after fine grinding process, using a spring 30WACr2VA tungsten chromium Vanadium alloy spring steel from refined, and the introduction of Japanese cedar trees machinery will be silver-impregnated graphite high temperature seals from the assembly, with the temperature effects, and life than the original, high-temperature range of 30%.

该产品采用机械密封，不必填料，自动同心，使用寿命长，参数广（压力15-30㎏/㎝2，温度-50℃—450℃，转速0—500转/分，介质：导热油、蒸汽、水、空气等），是解决跑、冒、滴、漏，节约能源，改善工作环境的理想密封部件（导热油系列旋转接头：壳体内部和球面经过精磨加工，弹簧采用30WACr2VA 钨铬钒合金弹簧钢精制而成，并引进日本柏木机械株式会银浸渍石墨高温密封件组装而成，具有耐高温之特效，而且使用寿命较原来中、低温系列高30％。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。