SkinAndMuscleOfUpperLipLabiiSuperioris
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Sigma KEE - InsulatorSubstance
绝缘体物质
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a Substance such as glass or porcelain with negligible electrical conductivity.
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物质 |
An Object in which every part is similar to every other in every relevant respect. More precisely, something is a Substance when it has only arbitrary pieces as parts - any parts have properties which are similar to those of the whole. Note that a Substance may nonetheless have physical properties that vary. For example, the temperature, chemical constitution, density, etc. may change from one part to another. An example would be a body of water.
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