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DB46/T 270-2014 海口市乡村旅游区(点)等级划分与评定 现行 发布日期 :  2014-01-29 实施日期 :  2014-03-01

适用于海口市范围内的乡村旅游区(点)的等级划分与评定。

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DB42/T 270-2011 地理标志产品利川黄连 现行 发布日期 :  2011-12-08 实施日期 :  2012-02-08

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DB50/T 270-2008 气象灾害标准 现行 发布日期 :  2008-03-15 实施日期 :  2008-05-01

本标准规定了重庆市境内发生的主要气象灾害的定义和技术内容。本标准适用于重庆市各级气象、农业、林业、畜牧、水利、环保、民族、信息、统计、交通、电力、国土等部门对气象灾害的调查、评估、统计、发布和研究。

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DB45/T 270-2005 毛节瓜生产技术规程 现行 发布日期 :  2005-10-10 实施日期 :  2005-10-30

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DB43/T 270-2005 南瓜栽培技术规程 现行 发布日期 :  2005-08-15 实施日期 :  2005-09-15

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DB63/T 270-1996 春小麦青春254品种 现行 发布日期 :  1996-12-03 实施日期 :  1997-01-10

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定价: 2434元 / 折扣价: 2069 加购物车

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BS 2000-270:1994 Methods of test for petroleum and its products 被代替 发布日期 :  1994-10-15 实施日期 : 

定价: 1475元 / 折扣价: 1254 加购物车

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4.1 Seven-wire steel strand is used in pre-tensioned and post-tensioned concrete construction.4.2 0.600 in. [15.24 mm] diameter, Grade 270 seven-wire steel strand is used to make prestressed ground anchors which are often bonded to cement grout.4.3 Manufacturing processes, subsequent handling, and storage conditions may influence the strand bond.4.4 The primary use of this test method is to establish the relative bond strength of 0.600 in. [15.24 mm] seven-wire steel strand.4.5 The relative bond strength is determined by recording the pullout force at a certain displacement of the strand.AbstractThis test method deals with the standard procedures for establishing the relative bond strength of Grade 270 prestressing steel strands of specified diameter in cement grout as used in prestressed ground anchors for evaluating the effects of manufacturing practices on bond strength. The bond strength values obtained shall not be used to design the bond strength of ground anchors that depend on field conditions. This test method is not intended to be used as a bond test for pretensioned concrete applications. The test specimen shall be cut from standard production coils and shall not be wiped or cleaned. Pull test shall be made in accordance with the method.1.1 This test method describes procedures to establish the relative bond strength of 0.600 in. [15.24 mm] diameter, Grade 270 [1860] seven-wire steel strand in cement grout as used in prestressed ground anchors for the purpose of evaluating the effects of manufacturing practices on bond strength.1.2 The bond strength values obtained are not intended to be used to design the bond length of ground anchors that depend on field conditions.1.3 This test method is not intended to be used as a bond test for prestressed concrete applications.1.4 The values stated in either inch-pound or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Defines generic requirements, which pertain to SCSI-3 implementation standards, and implementation requirements. An implementation requirement specifies behavior in terms of measurable or observable parameters which apply directly to an implementation.

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ISO 270:1975 EN Withdrawal of ISO 270-1975 废止 发布日期 :  1975-10-01 实施日期 : 

定价: 525元 / 折扣价: 468 加购物车

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ISO/R 270:1962 EN Title missing - Legacy paper document 废止 发布日期 :  1962-01-01 实施日期 : 

定价: 525元 / 折扣价: 468 加购物车

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JJG 270-2008 血压计和血压表 现行 发布日期 :  2008-03-25 实施日期 :  2008-09-25

本规程适用于(台式和立式)水银血压计(以下简称血压计)和弹性式血压表(以下简称血压表)的首次检定、后续检定和使用中检验。

定价: 21元 / 折扣价: 18 加购物车

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CY/T 270-2023 静态图像识别与检索技术规则 现行 发布日期 :  2023-06-16 实施日期 :  2023-08-01

本文件规定了静态图像的类型与指标、图像识别与指标、图像检索与指标等适用于新闻出版及相关领域的图像处理与应用

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QC/T 270-2023 汽车用立式锻压钢质模锻件未注公差尺寸的极限偏差 现行 发布日期 :  2023-04-21 实施日期 :  2023-11-01

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