查询词典 tungsten filament

Both of tungsten filament and tantalum filament are the ideality material in the HFCVD ,they are have high melting point and boiling point, but there is obviously difference effect between them in the HFCVD.

钨丝和钽丝都是作为热丝的理想材料，具有较高的熔点和沸点，但是在热丝法沉积金刚石薄膜的作用还是有很明显的差异。

With the development of the productivity of tungsten filament , the mode of giving material by hand adopted by Tungsten pole production through swaging can't meet the demand of the society more and more, for its bad working environment and unstable product quality.

随着钨丝生产行业的发展，旋锻法生产钨杆所采用的手工送料方式，由于工人劳动条件恶劣以及质量不稳定，越来越不能满足社会的需求。

Third, nearly seven times the service life of halogen lamps; As already mentioned, halogen light-emitting principle is caused by a tungsten filament heating, while the tungsten filament in the long term there will definitely be blown under high temperature damage, so they are the life of 200 ~ 300 hours or so.

第三，近7倍于卤素灯的使用寿命；前面已经讲到，卤素灯的发光原理是由钨丝发热所致，而钨丝在长久的高温下难保不烧断损坏，所以它们的使用寿命只有200~300个小时左右。

Comprehensive production and processing scale should not be less than 3 thousand ton every year, the output of tungsten powder and hard alloy or tungsten filament, tungsten materials and etc.

钨品生产企业应以钨品为主营产品，以2002、2003年平均年产量为准，综合生产、加工规模不低于3000吨/年，钨粉及硬质合金产量不低于500吨/年。

Quite different from ordinary halogen bulbs that rely on a heated tungsten filament, High Intensity Discharge lights or HID lights don't use a filament.

不同于普通的卤素灯泡依靠加热钨丝，高强度放电的HID灯灯或不使用灯丝。

We have make use of the tungsten filament and tantalum filament as the hot filament in the HFCVD experiment separately, to investigate the difference that hot filament influence to the velocity of the sediment.

本论文分别用钨丝和钽丝作为热丝进行金刚石薄膜沉积实验，来研究不同材质的灯丝对沉积速率的影响。

Traditional lighting an important raw material of tungsten resources and has to replace the tungsten filament light batteries, lighting the first "revolution" and by virtue of the semiconductor lighting industry, accounted for 3.0 billion years, become the country's top five semiconductor lighting industrial bases

传统照明的重要原料钨资源，并已取代钨丝灯电池，照明第一个"革命"，由半导体照明产业美德，占3.0亿年，成为全国五大半导体照明产业基地

The company mainly produces high temperature iodine-tungsten lamp tungsten wire, heating tube heater tungsten wire, film light source with tungsten filament, tungsten and other tungsten wire cutter heterosexual Products.

目前公司主要生产耐高温碘钨灯钨丝，取暖器加热管钨丝，影视光源用钨丝，钨绞丝及其它钨异性产品。

When end surface is neglected, the reflective energy will return to the filament efficiently if the filament is at the centre axis of the columniform lamp shell. 3 Compared with the straight tungsten filament that has a smooth surface, the helical one obtains higher absorbance which can achieve 0.6~0.7 under the actual screw pitch measurement.

当灯的管径为10 mm，而灯丝外径为1.5 mm时，节能可达12%到13%。2）对圆柱形灯外壳，在不考虑端面影响时，光源的灯丝若处于外壳的中心轴上，则反射的能量会有效地返回灯丝。3）螺旋结构的灯丝比表面光滑的直钨丝有更高的吸收率，灯丝绕成螺旋后在现行的螺距尺寸下吸收率能达到

Melting point 3410 ℃, boiling point 560 ℃, relative density of 1935, F the external electronic structure of 5d46s2, in the chemical reaction time is very easy to lose 1-6 electronic, but also can get 1-2 electronic, so oxidation number of 0,± 1,± 2, 3, 4 , 5 and 6, with 6 price of the most stable compounds, such as WO3 does not dissolve in water, the air will form in the tungsten trioxide thin protective layer of tungsten, tungsten with fluorine at room temperature, chemical combination, red hot when there is no moisture and Bromine iodide together, red hot when you can and water reaction WO3, at room temperature reaction of tungsten with aqua regia, but the hot concentrated hydrochloric acid and sulfuric acid can only be played with its weak response, but molten nitrate, nitrite, too Hydrogen peroxide, sulfur steam, steam and other phosphorus can play intense reaction, high temperature can not be carbon, boron and silicon reaction of binary compounds, widely used in industrial tungsten steel and tungsten carbide, pure tungsten filament is used to the system, and X-ray tube Tube heating components, semiconductor components can be prepared tungsten silicide, tungsten industrial production is white or black tungsten ore tungsten ore refining.

熔点3410℃，沸点560℃，相对密度1935，F外围电子结构为5d46s2，在化学反应时很容易丢掉1—6个电子，也能得到1—2个电子，所以氧化数为0、±1、±2、＋3、＋4、＋5和＋6，以＋6价化合物最稳定，如WO3不溶于水，空气中的钨会形成薄层三氧化钨保护层，钨能与氟在室温下化合，红热并无潮气时能与溴、碘化合，红热时还能和水反应生成WO3，室温下钨可与王水反应，但热的浓盐酸和硫酸只能与其起微弱反应，但对熔融的硝酸盐、亚硝酸盐、过氧化氢、硫蒸汽、磷蒸汽等能起激烈反应，高温下不能与碳、硼和硅反应生成二元化合物，工业上广泛使用钨钢和碳化钨，纯钨用来制灯丝、电子管和X射线管的发热元件，硅化钨可制半导体元件，钨工业生产是将白钨矿石或黑钨矿石精炼。

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。