共找到 150 條與 KNA 相關(guān)的標(biāo)準(zhǔn)，共 10 頁
Roofing handwork. Roof installation with bitumen shingles. Rules and control of work
GB/T15972的本部分規(guī)定了光纖數(shù)值孔徑的試驗方法,確立了對試驗裝置、樣品制備、程序、計算和結(jié)果的統(tǒng)一要求。本部分適用于A1類﹑A2類、A3類﹑A4類多模光纖和光纜
Specifications for optical fibre test methods—Part 43: Measurement methods and test procedures for transmission characteristics—Numerical aperture
Railway applications - Track - Concrete sleepers and bearers - Part 6: Design
Coliform Bacteria, Thermotolerant Coliform Bacteria and Escherichia coli in Water - Determination with the Membrane Filtration Method (MF)
This part of IEC 60793 establishes uniform requirements for measuring the numerical aperture of optical fibre, thereby assisting in the inspection
Optical fibres - Part 1-43: Measurement methods and test procedures - Numerical aperture measurement
IEC 60793的這一部分為測量光纖的數(shù)值孔徑建立了統(tǒng)一要求，從而有助于對商業(yè)用途的光纖和電纜進行檢查。 A1、A2、A3和A4類多模光纖的數(shù)值孔徑（NA）是描述光纖聚光能力的重要參數(shù)。它用于預(yù)測發(fā)射效率、接頭處的連接損耗以及微/宏彎曲性能。 數(shù)值孔徑通過測量遠場圖案（NAff）來定義。在某些
Optical fibres. Measurement methods and test procedures. Numerical aperture measurement
Kumulierter Energieaufwand - Begriffe@ Definitionen@ Berechnungsmethoden
This part of IEC 60793-2 is applicable to sub-categories A3a, A3b, A3c, A3d, A3e, A3f and A3g. These fibres are used or can be incorporated
Optical fibres - Part 2-30: Product specifications - Sectional specification for category A3 multimode fibres
本部分IEC 60793-2適用于子類別A3a、A3b、A3c、A3d、A3e、A3f和A3g。這些光纖可用于或集成在不同的信息傳輸設(shè)備、其他采用類似光傳輸技術(shù)的應(yīng)用以及光纖電纜中。對這些光纖適用三類要求：? IEC 60793-2中定義的一般要求；? 本標(biāo)準(zhǔn)涵蓋的A3多模光纖類別的特定要求，在第3
Optical fibres - Part 2-30: Product specifications - Sectional specification for category A3 multimode fibres (Endorsed by AENOR in November of 2015.)
本標(biāo)準(zhǔn)規(guī)定了化學(xué)試劑四水合酒石酸鉀鈉的技術(shù)要求、試驗方法、檢驗規(guī)則和包裝、標(biāo)志。本標(biāo)準(zhǔn)適用于化學(xué)試劑四水合酒石酸鉀鈉的檢驗
Chemical Reagent Potassium Sodium Tartrate Tetrahydrate
本部分 IEC 60793-2 適用于子類別 A3a、A3b、A3c、A3d、A3e、A3f 和 A3g。這些光纖用于或可以集成到不同的信息傳輸設(shè)備中，以及其他采用類似光傳輸技術(shù)的應(yīng)用以及光纖電纜中。對這些光纖適用三種類型的要求： ? 一般要求，如 IEC 60793-2 中所定義； ? 本標(biāo)準(zhǔn)涵蓋
Optical fibres. Product specifications. Sectional specification for category A3 multimode fibres
Masonry structures. Method of estimating bonding strength in masonry
Railway applications - Track - Concrete sleepers and bearers - Part 6: Design; German version EN 13230-6:2020
1.1 Denna internationella standard specificerar en metod med vilken det frekvensberoende v?rdet av ljudabsorptionen kan omr?knas till ett
Acoustics - Sound absorbers for use in buildings - Rating of sound absorption (ISO 11654:1997)
1.1 Denna Europastandard anger parametrar som grundar sig p? v?rden f?r hastigheter med vilka en person med hand/arm eller andra kroppsdelar n?rmar
Safety of machinery - The positioning of protective equipment in respect of approach speeds of parts of the human body
