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SAE AS6048B-2018 Fitting, Elbow, 90 Degree, Standard And Reducer, Bulkhead, Flareless, Precision Type
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2023-09-27 11:12:01浏览:9
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SAE AS6369/1-2017 Coupling, Sheet Metal, 40° V-Band, Wide, Standard Latch
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2023-09-27 04:00:01浏览:10
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ASTM D1600-2018 有关塑料缩略语的术语 Standard Terminology for Abbreviated Terms Relating to Plastics
1.1 The purpose of this terminology is to provide uniform contractions of terms relating to plastics. Abbreviated terminology has evolved through widespread common usage. This compilation has been prepared to avoid both the occurrence of more than one abbreviated term for a given plastics term and multiple meanings for abbreviated terms. 1.2 The scope of these abbreviated terms includes plastics terms pertaining to composition and relating to type or kind according to mode of preparation or principle distinguishing characteristics. Also included are abbreviated terms for terms relating to copolymers, blends and alloys of plastics, and additives such as plasticizers, fillers, etc. Note 1: A code relating to the composition of rubbers is given in Practice D1418. 1.3 No attempt is made here to systematize formally a shorthand terminology for polymers. Terminology, including nomenclature, codes, symbols, and formula designations for use in scientific literature in the field of natural and synthetic polymers, are being studied and standardized by the International Union of Pure and Applied Chemistry.2 1.4 These abbreviated terms are by no means all-inclusive of plastics terminology. They represent, in general, those terms that have come into established use. Since it is recognized that abbreviated terms serve no useful purpose unless they are generally accepted and used, no attempt has been made to establish a rigorous code for devising standard abbreviated terms. This would result in awkward departures from established usage of existing and accepted abbreviated terms and lead to cumbersome combinations in the future, which would not be likely to receive widespread acceptance. The abbreviated terms now in use have grown naturally out of the need for convenient, readily comprehended shorthand for long chemical names. This process can be expected to continue along the natural lines of least resistance and will serve as a basis for fu...
2023-09-23 08:12:01浏览:11
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DB12/T 374-2011 保安服务规范 Security Service Standard
本标准规定了保安服务规范的范围、术语定义、工作职责、保安从业单位资质条件、保安从业人员基本条件、保安员服务、保安服务质量、保安工作管理、保安设备设施、保安员培训、保安服务质量检查与改进。<br />本标准适用于在天津市行政区域内,经天津市公安局批准,天津市工商行政管理部门注册的保安服务公司。<br />本标准适用于在天津市行政区域内,经天津市公安局备案,天津市工商行政管理部门或主管审批部门注册的具有法人资格的机关、团体、企业、事业单位和物业服务企业。...
2023-09-23 08:00:01浏览:12
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ASTM D1038-2019 有关镶板和胶合板的术语 Standard Terminology Relating to Veneer, Plywood, and Wood Structural Panels
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2023-09-23 00:36:01浏览:14
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GB 9664-1996 文化娱乐场所卫生标准 Hygienic standard for public place of entertainment
本标准规定文化娱乐场所的微小气候、空气质量、噪声、通风等卫生标准值及卫生要求。<br />本标准适用于影剧院(俱乐部)、音乐厅、录像厅(室)、游艺厅、舞厅(包括卡拉OK歌厅)、酒吧、茶座、咖啡厅及多功能文化娱乐场所等。...
2023-09-22 22:12:01浏览:14
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ASTM F2440-2018 Standard Specification for Indoor Wall/Feature Padding
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2023-09-22 20:00:01浏览:17
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ASTM C67/C67M-2020 Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile
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2023-09-21 14:12:02浏览:7
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ASTM D1765-2019 Standard Classification System for Carbon Blacks Used in Rubber Products
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2023-09-21 11:48:01浏览:12
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ASTM D4235-2020 Standard Performance Specification for Women's and Girls' Knitted Blouse and Dress Fabrics
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2023-09-21 10:48:01浏览:15
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ASTM B26/B26M-2018 Standard Specification for Aluminum-Alloy Sand Castings
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2023-09-21 06:36:02浏览:14
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