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tungsten filament 鎢絲。

tungsten steel

Two kinds of wo3 powder are prepared by sol - gel method and gas - phase reaction method with tungsten filament , and heater type gas sensors to trimethylamine are made . under different work temperatures , these sensors ’ sensitivities are measured , and the result indicates that wo3 by sol - gel has better gas sensing performance to trimethylamine . at the same time , the wo3 - based gas sensor to trimethylamine can work at low temperature , which 3 、本課題對不同摻雜的wo3材料進行了研究,發現摻雜3 % pd的wo3基氣敏元件在150ppm三甲胺氣體中,最佳工作溫度僅為85 ,該溫度下元件最高靈敏度可達11 . 7 ,并且元件的靈敏度隨tma濃度的升高而變大,這表明摻雜pd的wo3材料在低溫下對tma氣體有很好的響應。

The analysis of the weak signal circuit , amplifying circuit of the signal and power circuit in the thermal conductivity detector has been done , and the characteristic of the circuits with the rhenium tungsten filament is designed 針對氣相色譜熱導檢測器的弱信號失真和電源不穩定問題,研究與設計熱導檢測器的弱信號測量電路、信號放大電路以及電源電路。

In fact of the preparation of material , nanometer wo _ 3 was synthesized in a novel method by gas - state reaction with tungsten filament . further more , we designed a new type gas sensor based on hall effect 在材料制備方面,我們使用了一種新的wo _ 3粉末制備方法:采用氣相反應法,以純鎢絲為原料,獲得了wo _ 3納米氣敏材料。

Safety of power transformers , power supply units and similar products - part 2 - 9 : particular requirements for transformers for class iii handlamps for tungsten filament lamps 功率變壓器電源設備及類似裝置的安全性.第2 - 9部分:類手提鎢絲燈用變壓器的特殊要求

Safety of power transformers , power supply units and similar products - part 2 - 9 : particular requirements for transformers for class iii handlamps for tungsten filament lamps 電力變壓器供電設備及類似設備的安全.第2 - 9部分:類手用鎢絲燈的壓變壓器的特殊要求

Incandescent lamps - safety specifications - part 1 : tungsten filament lamps for domestic and similar general lighting purposes iec 60432 - 1 : 1999 , modified a1 : 2005 ; german version en 60432 - 1 : 2000 a1 : 2005 白熾燈.安全規范.第1部分:家用和類似場合普通照明用

Safety of power transformers , power supply units and similar products - particular requirements for transformers for class iii handlamps for tungsten filament lamps 電力變壓器供電設備及類似設備的安全.類手抽式鎢絲燈的變壓器的特殊要求

Amendment 1 - incandescent lamps - safety specifications - part 1 : tungsten filament lamps for domestic and similar general lighting purposes 修改件1 .白熾燈.安全規范.第1部分:家用和類似場合普通照明用鎢絲燈

Incandescent lamps - safety specifications - part 1 : tungsten filament lamps for domestic and similar general lighting purposes 白熾燈.安全規范.第1部分:家用和類似用途一般照明用鎢絲燈

Safety specifications for incandescent lamps - part 1 : tungsten filament lamps for domestic and similar general lighting purposes 白熾燈安全規范.第1部分:家用和類似照明用途的鎢絲燈

Safety specification for incandescent lamps - tungsten filament lamps for domestic and similar general lighting purposes 白熾燈安全性規范.家用和類似普通照明用的鎢絲燈

Tungsten filament lamps for domestic and similar general ligthing purposes - performance requirements ; amendment 2 家用和類似用途的普通照明用鎢絲燈.性能要求.修改件2

Amendment 1 - tungsten filament lamps for domestic and similar general lighting purposes - performance requirements 家庭及類似場合普通照明用鎢絲燈.性能要求.修改件1

Amendment 3 - tungsten filament lamps for domestic and similar general lighting purposes - performance requirements 修改件3 .家用及類似場合普通照明用鎢絲燈.性能要求

Tungsten filament lamps for domestic and similar general lighting purposes - performance requirements 家用和類似普通照明用鎢絲燈泡.性能要求

Tungsten filament lamps for domestic and similar general lighting purposes - performance requirements 家庭和類似場合普通照明用鎢絲燈性能要求

Tungsten filament lamps for domestic and similar general lighting purposes - performance requirements 家用和類似普通照明用鎢絲燈.性能要求

Tungsten filament lamps for domestic and similar general lighting purposes safety specification 家庭和類似場合普通照明用鎢絲燈安全要求

Specification for electronic variable control switches dimmer switches for tungsten filament lighting 鎢絲燈照明用電子可調控制開關