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  • ASTM D653-14
    有關土壤, 巖石和其內部所含液體的標準術語

    Standard Terminology Relating to Soil, Rock, and Contained Fluids


    標準號
    ASTM D653-14
    發布
    2014年
    發布單位
    美國材料與試驗協會
    替代標準
    ASTM D653-20
    當前最新
    ASTM D653-22
     
     
    引用標準
    ASTM C150 ASTM C802 ASTM D1557 ASTM D1883 ASTM D2435 ASTM D2487 ASTM D4043 ASTM D4044 ASTM D4050 ASTM D4104 ASTM D4105 ASTM D4106 ASTM D4186 ASTM D4253 ASTM D4254 ASTM D4318 ASTM D4429 ASTM D4750 ASTM D4943 ASTM D5084 ASTM D5088 ASTM D5092 ASTM D5269 ASTM D5270 ASTM D558 ASTM D5878 ASTM D6026 ASTM D6028 ASTM D6029 ASTM D6312 ASTM D6910/D6910M ASTM D6913 ASTM D698 ASTM D7099 ASTM D7382 ASTM D854 ASTM E691
    適用范圍

    3.1 Definitions in this standard are to be regarded as the correct ones for terms found in other ASTM standards of Committee D18. Certain terms may be found in more than one standard issued under the jurisdiction of this committee and many of these terms have been placed in this standard.

    3.2 Terms that are defined in some textbooks may differ slightly from those in this terminology standard. Definitions in this terminology standard are to be regarded as correct for ASTM usage.

    3.3 See Appendix X1 for References.

    3.4 Definitions marked with (ISRM) are included for the convenience of the user and were taken directly from the International Society for Rock Mechanics (see X1.3).

    3.5 A number of the definitions include symbols. The symbols appear in italics immediately after the name of the term.

    3.5.1 No significance should be placed on the order in which the symbols are presented where two or more are given for an individual term.

    3.5.2 The symbols presented are examples; therefore, other symbols are acceptable.

    3.5.3 See Appendix X2 for ISRM Symbols.

    3.6 A number of definitions indicate the units of measurements in brackets and which follow the symbol(s) if given. The applicable units are indicated by italic capital letters, as follows:
    8199;D—Dimensionless
    8199;F—Force, such as pound-force, ton-force, newton
    8199;L—Length, such as inch, foot, millimeter, and meter4
    8199;M—Mass, such as kilogram, gram
    8199;T—Time, such as second, minute

    3.6.1 Positive exponents designate multiples in the numerator. Negative exponents designate multiples in the denominator. Degrees of angle are indicated as “degrees.”

    3.6.2 Expressing the units either in SI or the inch-pound system has been purposely omitted in order to leave the choice of the system and specific unit to the engineer and the particular application, for example:
    8199;FL−2—may be expressed in pounds-force per square inch, kilopascals, tons per square foot, etc.
    8199;LT−1—may be expressed in feet per minute, meters per second, etc.

    這幾種典型地物反射光譜特征

    水體反射光譜與水狀態、所含能量、水中有機質、水藻、泥沙等有關。4植被反射光譜特征地面植物具有明顯光譜反射特征,不同于土壤、水體其他典型地物,植被對電磁波響應是由化學特征形態學特征決定,這種特征與植被發育、健康狀況以及生長條件密切相關。??...

    核磁共振應用巖土孔隙結構分析孔隙度測量

    當孔隙內液體為水且磁場梯度近似為零條件下,多孔介質體系橫向弛豫時間縱向弛豫時間只與多孔介質孔隙結構有關系,主要受體系表面弛豫機制影響,而近似與其他兩類弛豫機制無關核磁共振在石油巖心領域功能 :1)孔隙度、含水率、含水飽和度測定2)凍融溫度-滲流-應力損傷本構模型3)凍融機理研究4)凍土未動水含量測定5)天然氣水合物形成與過程分解6)毛細水與吸附水含量測定應用舉例一:土壤孔徑分布土壤...

    核磁共振應用于巖土孔隙結構分析孔隙度測量

    當孔隙內液體為水且磁場梯度近似為零條件下,多孔介質體系橫向弛豫時間縱向弛豫時間只與多孔介質孔隙結構有關系,主要受體系表面弛豫機制影響,而近似與其他兩類弛豫機制無關核磁共振在石油巖心領域功能 :1)孔隙度、含水率、含水飽和度測定2)凍融溫度-滲流-應力損傷本構模型3)凍融機理研究4)凍土未動水含量測定5)天然氣水合物形成與過程分解6)毛細水與吸附水含量測定應用舉例一:土壤孔徑分布土壤...

    非金屬材料性能指標術語,值得收藏!

    21表面張力表面能(Surface tension and surface energy)液體內部分子吸引力使表面上分子處于向內一種力作用下,這種力使液體盡量縮小表面積而形成平行于表面的力,稱為表面張力。或者說是液體表面相鄰兩部分間單位長度內相互牽引力,它是分子力一種表現。表面張力單位是N/m。表面張力大小與液體性質、純度溫度有關。表面張力乘表面的面積即為表面能。...


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