grounding
 放在地面上,底子,基礎工事
 grounding
 接地
 grounding
 接地
 ground v. t. [imp. & p. p. grounded; p. pr. & vb. n. grounding.]
 1. To lay, set, or run, on the ground.
 2. To found; to fix or set, as on a foundation, reason, or principle; to furnish a ground for; to fix firmly.
    Being rooted and grounded in love.   --Eph. iii. 17.
    So far from warranting any inference to the existence of a God, would, on the contrary, ground even an argument to his negation.   --Sir W. Hamilton
 3. To instruct in elements or first principles.
 4. Elec. To connect with the ground so as to make the earth a part of an electrical circuit.
 5. Fine Arts To cover with a ground, as a copper plate for etching (see Ground, n., 5); or as paper or other materials with a uniform tint as a preparation for ornament.
 Ground·ing, n.
 1. The act, method, or process of laying a groundwork or foundation.
 3.  The act or process of applying a ground, as of color, to wall paper, cotton cloth, etc.; a basis.
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 grounding
      n 1: education or instruction in the fundamentals of a field of
           knowledge; "he lacks the foundation necessary for
           advanced study"; "a good grounding in mathematics" [syn:
            foundation]
      2: fastening electrical equipment to earth [syn: earthing]