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31, This paper covers the calibration method of tungsten - rhenium thermocouples using an optical pyromer as standtard instrument.

32, Using WF6 and H2 as raw materials, tungsten plate formed by powder metallurgy as substrate, the deformable tungsten ingots were prepared successfully by a hot-wire CVD experimental facility.

33, In the present study, tungsten oxide nanorods were prepared by a plasma arc gas condensation technique where a gas nozzle was introduced to provide blowing gas.

34, Experiments show that under the same conditions, the rate of penetration of Ultra-fine grain tungsten-penetrators is higher than tungsten heavy alloy penetrators .

35, Tungsten mineralization types in Yaoling zone are divided into quartz vein, greisen, altered granite and placer.

36, It also said that it was working to ensure that minerals used in electronics manufacturing, like tantalum, tungsten and gold, do not come from war-torn regions.

37, Due to its high melting point and low sputtering rate, the tungsten is considered as a highly promising candidate of plasma facing material (PFM) in nuclear fusion systems.

38, Edison's efforts to invent electric light bulb did not pan out until he used tungsten wires.

39, Refractory metal and cemented carbides: steel, metal steel, tungsten metal, crucible etc.

40, A tungsten tip received discharge treatment under a high voltage over 10?kV in a field-emission microscope (FEM).

41, Studies the possibility on improving trursmutative soil service life based on the tungsten alloy cast iron liner which was made from tungsten slag alloy.

42, The binuclear tungsten citrate complex was synthesized by the reaction of (NH4)2WS4 with potassium citrate, and characterized by IR and elemental analysis.

43, The results show that the tungsten railings glass-ceramics exhibts excellent properties. It is a new architectural decorative and wear-resisting, corr... Sentencedict.com

44, The hole injection layer contains tungsten oxide or molybdenum oxide.

45, Tungsten is a traditional dominant mineral in China, and the total production control system has been implemented for many years.

46, Several grains of tsumoite was found in Hongling deposit accrete with bismuthinite and bismuth, which is the first founding of this mineral in vein type tungsten deposit.

47, A glass or quartz tube has tungsten electrodes sealed in each end.

48, In ordinary chemical phase analyses of tungsten only tungstite, scheelite and wolframite are dealt with.

49, Features: imported tungsten steel, high abrasion resistance , anti - broken. Mainly applies to: acrylic and density wood cutting.

50, When grinding (pointing) thoriated tungsten electrodes, always use local exhaust and, if necessary, respiratory protection to prevent inhalation of dust.

51, Tungsten ( or wolfram ) : Metallic chemical element, of the transition elements, chemical symbol W, atomic number 74.

52, The Scandia doped tungsten body was applied in impregnated dispenser cathode and the effect of the improving matrix on the cathode characteristic was also studied.

53, Tungsten carbide welding rod is a raw material for the crane.

54, The only thing that stood a chance of piercing the frontal armour of the Tiger was the British 17 - pounder gun, a weapon that boasted a revolutionary discarding tungsten sabot round.

55, Tungsten STM tips made by electrochemical etching are always covered with a layer of oxide film, which greatly affects the quality of STM images.

56, Gas - filled lamp containing a tungsten filament and a small proportion of halogens.

57, Air contains oxygen, and the hot tungsten could burn in it.

58, The main mineral resources have a crystal, iron, tungsten, tin, manganese, potassium feldspar, quartz sand quality.

59, The tungsten and hafnium were analyzed by multi-elemental spectral lines average method and corrected by the matrix matching and background correction methods.

60, Scandia and rhenium doped tungsten powders were prepared by solid-liquid doping combined with two-step reduction method.