共找到 150 条与 Long Term Evolution 相关的标准，共 10 页
本报告总结了为美国石油协会（API）进行的文献综述结果，该综述旨在评估掺乙醇汽油对液体石油储存系统及组件长期结构完整性的影响。随着机动车燃料中乙醇使用量的持续增加，业界对乙醇对液体石油储存系统（包括地下储罐、地下管道及相关组件）的长期结构影响产生了兴趣。本文献综述的目标是确定业界关于乙醇/汽油混合燃料对地下储罐系统及组件长期结构完整性影响的知识状态和研究现状。本综述旨在协助决策者确定进一步的研究需求，以及针对用于储存和分配掺乙醇汽油的地下储罐系统及组件的现有标准所需的变更或补充。
Impact of Gasoline Blended with Ethanol on the Long-Term Structural Integrity of Liquid Petroleum Storage Systems and Components
本报告总结了美国石油协会（API）进行的文献综述结果，该综述旨在评估掺乙醇汽油对液体石油储存系统及组件长期结构完整性的影响。随着机动车燃料中乙醇使用量的增加，人们对其对地下储罐（UST）、地下管道及相关组件长期结构影响的兴趣日益增加。本综述的目标是确定行业关于乙醇/汽油混合物对地下储罐系统及组件长期结构完整性影响的知识状态和研究现状。本综述旨在协助决策者确定进一步的研究需求，以及针对用于储存和分配掺乙醇汽油的地下储罐系统及组件的现有标准所需的变更或补充。
Impact of Gasoline Blended with Ethanol on the Long-Term Structural Integrity of Liquid Petroleum Storage Systems and Components
Molykote Long-Term 2 (Version 5; English/Korean)
This part of IEC TS 61244@ which is a technical specification@ applies to procedures for predicting ageing of polymeric materials at low dose rates. The object is to present three methods which can be used to extrapolate data obtained from high dose rate experiments to the low dose rates typical of service conditions. These methods assume that homogeneous oxidation has been achieved under the test conditions. The techniques described in the following clauses are methods which have been found to be useful for a range of elastomeric@ thermoplastic and thermoset materials. The procedures require a considerable number of test data to enable predictions to be made under low dose rate conditions.
Détermination du vieillissement à long terme sous rayonnement dans les polymères – Partie 2: Méthodes pour prédire le vieillissement à faible débit de dose (Edition 2.0)
Aerospace series LOTAR LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data Part 100: Common concepts for Long term archiving and retrieval of CAD 3D mechanical information (Edition P 1)
Elektronische Bauteile - Langzeitlagerung elektronischer Halbleiterbauelemente - Teil 4: Lagerung (IEC 47/2324/CD:2016)
"Introduction This document defines common fundamental concepts for long term archiving and retrieval of CAD mechanical information for elementary parts and assemblies. It details the ""fundamentals and concepts"" of EN 9300-003 in the specific context of long term archiving of CAD mechanical models. CAD mechanical information is divided into assembly structure and geometrical information@ both including explicit and implicit geometrical representation@ Geometric Dimensioning and Tolerancing with Form Features. The EN 9300-1XX family is organized as a sequence of parts@ each building on the previous in a consistent way@ each adding a level of complexity in the CAD data model. This includes the detailing of relationships between the essential information for the different types of CAD information covered by the EN 9300-1XX family. As technology matures additional parts will be released in order to support new requirements within the aerospace community. In scope The present part describes: ?? The fundamentals and concepts for Long Term Archiving and Retrieval of CAD 3D mechanical information; ?? The document structure of the EN 9300-1XX family@ and the links between all these parts; ?? The qualification methods for long term preservation of archived CAD mechanical information; more specially@ principles for the CAD validation properties and for verification of the quality of the CAD archived file; ?? Specifications for the preservation planning of archived CAD information; ?? Specific functions for administration and monitoring of CAD archived mechanical models; ?? The definition of Archive Information Packages for CAD data. Out of Scope The following are out of scope for this part: ?? Long Term Archiving of CAD 2D drawings; ?? Other CAD business disciplines@ such as piping@ tubing@ electrical harnesses@ composite@ sheet metal design@ kinematics. This version does not include: ?? Fundamental and concepts for parts EN 9300-120 version 2@ EN 9300-125@ 1 EN 9300-130."
Aerospace series LOTAR LOng Term Archiving and Retrieval of digital technical product documentation such as 3D@ CAD and PDM data Part 100: Common concepts for Long term archiving and retrieval of CAD 3D mechanical information (Edition P 1)
本部分 IEC 62435 规定了数据（存储）对于电子组件的长期存储的重要性，需要存储哪些数据以及如何最好地存储以避免在存储期间数据丢失。本部分描述了存储组件成功使用所需的必要数据，并保持可追溯性或保管链。长期存储指的是产品计划存储超过12个月的情况。还讨论了促进电子组件成功长期存储的理念、良好工作实践和一般方法。
Elektronische Bauteile - Langzeitlagerung elektronischer Bauteile - Teil 3: Daten (IEC 47/2430/CD:2017)
This part of IEC TS 61244@ which is a technical specification@ reviews experimental techniques to quantitatively monitor the effects when oxygen is present during ageing of polymers in various environments including temperature@ radiation or ultraviolet. Inhomogenous ageing effects caused by diffusion-limited oxidation are often encountered and provide theoretical equations to estimate their importance. These effects make it difficult to understand the ageing process and to extrapolate accelerated exposure to long-term conditions. It is widely known that mechanical properties degrade prior to electrical properties.These changes are consequences of chemical changes such as oxidation. In this technical specification@ only mechanical or chemical monitoring techniques are of interest. This technical specification does not deal with electrical monitoring techniques.
Determination of Long-Term Radiation Ageing in Polymers - Part 1: Techniques for Monitoring Diffusion-Limited Oxidation (Edition 2.0)
Elektronische Bauteile - Langzeitlagerung elektronischer Halbleiterbauelemente - Teil 6: Bauelemente in Gehaeusen (IEC 47/2390/CD:2017)
Scope and object This part of IEC 1244 is a technical report of type 2 which applies to procedures for predicting ageing at low dose rates. The object of this report is to present three methods which have been used to extrapolate data obtained from high dose rate experiments to the low dose rates typical of service conditions. These methods assume that homogeneous oxidation has been achieved under the test conditions. The techniques described in the following clauses are research methods which have been found to be useful for a range of elastomeric and thermoplastic materials and some thermosets@ and are subject to continuing research. The procedures require a considerable number of test data to enable predictions to be made under low dose rate conditions. The power law extrapolation method (clause 2) has mainly been used for isothermal data whereas the superposition methods (clauses 3 and 4) can make use of data obtained over a range of temperatures.
Détermination du vieillissement à long terme sous rayonnement dans les polymères - Partie 2: Méthodes pour prédire le vieillissement à faible débit de dose (Edition 1.0)
本部分作为IEC TS 61244的一项技术规范，概述了在包括热以及电离或紫外辐射在内的各种环境条件下，测定聚合物在老化过程中受氧气影响效应的实验程序。由于扩散限制氧化导致的非均匀老化效应十分常见，并提供了一些估算其影响的理论公式。这些效应增加了理解老化过程和将短期辐射测试结果外推至长期条件的难度。众所周知，机械性能在电气性能之前发生退化。这些变化是化学过程的结果，例如氧化。在本技术规范中，仅关注机械或化学监测程序。本技术规范不涉及电气监测程序。
Bestimmung der Langzeitstrahlungs-Alterung in Polymeren - Teil 1: Verfahren zur Messung der diffusionsbegrenzten Oxidation (IEC/TS 61244-1:2014)
本技术规范 IEC TS 61244 的部分描述了预测低剂量率下聚合物材料老化的方法。介绍了三种可用于将高剂量率测试中获得的數據外推至运行条件下典型的低剂量率的方法。这些方法假设在测试条件下达到均匀氧化。下文所述的方法已被证明适用于多种弹性体、热塑性塑料和热固性塑料。这些方法需要大量的數據才能实现对低剂量率条件下的预测。
Bestimmung der Langzeitstrahlungs-Alterung in Polymeren - Teil 2: Verfahren zur Vorhersage der Alterung bei niedriger Dosisleistung (IEC/TS 61244-2:2014)
This European Standard provides a detailed description for the recommended data preparation process for archiving of 3D and PDM data, as overviewed in EN 9300-010.
Aerospace series - LOTAR Long Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 011: Reference process description "Data preparation"
Aerospace series - LOTAR Long Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 011: Reference process description "Data preparation"
