自然科學資源 (共428 份)

簡介：點擊查看更多GB／T 8106-1987 方向控制閥 試驗方法.pdf精彩內容。

簡介：Designation A 800/A 800M – 01 Reapproved 2006 Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof1 This standard is issued under the fixed designationA 800/A 800M; the number immediately following the designation indicates the year of original adoption or, i

簡介：Designation A 633/A633M – 01 Reapproved 2006 Standard Specification for Normalized High-Strength Low-Alloy Structural Steel Plates1 This standard is issued under the fixed designation A 633/A633M; the number immediately following the designation indicates the year of original adoption or, in the

簡介：Designation A 6/A 6M – 06 Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling1 This standard is issued under the fixed designation A 6/A 6M; the number immediately following the designation indicates the year of original adoption or, i

簡介：Designation A 775/A 775M – 06 Standard Specification for Epoxy-Coated Steel Reinforcing Bars1 This standard is issued under the fixed designationA775/A775M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revisi

簡介：點擊查看更多GB／T 2878.4-2011 液壓傳動連接 帶米制螺紋和O形圈密封的油口和螺柱端 第4部分：六角螺塞.pdf精彩內容。

簡介：Designation A 796/A 796M – 06 Standard Practice for Structural Design of Corrugated Steel Pipe, Pipe-Arches, and Arches for Storm and Sanitary Sewers and Other Buried Applications1 This standard is issued under the fixed designationA 796/A 796M; the number immediately following the designation ind

簡介：Designation A 568/A 568M – 06a Standard Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low- Alloy, Hot-Rolled and Cold-Rolled, General Requirements for1 This standard is issued under the fixed designationA 568/A 568M; the number immediately following the designation indicat

簡介：Designation A 754/A 754M – 06 Standard Test Method for Coating Weight Mass of Metallic Coatings on Steel by X-Ray Fluorescence1 This standard is issued under the fixed designationA 754/A 754M; the number immediately following the designation indicates the year of original adoption or, in the cas

簡介：Designation A 615/A 615M – 06 American Association State Highway andTransportation Officials Standard AASHTO No. M 31 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement1 This standard is issued under the fixed designationA615/A615M; the number immediately f