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礦物學(xué)專業(yè)術(shù)語 共有 1296 個詞條內(nèi)容

Abbe Refractometer

    Definition:An Abbe Refractometer is a bench-top device for the high-precision measurementof an index of refraction.阿貝折射儀ā bèi zhé shè yíabbe:阿貝 ā bèirefractometer: A refractometer is a laboratory or field device for the measurement of an indexof refractio...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

absolute structure

    Definition: The spatial arrangement of the atoms of a physically identified noncentrosymmetric crystal and its description by way of unit-cell dimensions,space group,andrepresentative coordinates of all atoms.絕對構(gòu)造jué duì gòu zào...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

absorption edge

    Definition: An absorption edge is a sharp discontinuity in the absorption spectrum of X-raysby an element that occurs when the energy of the photon corresponds to the energy of a shell ofthe atom.吸收邊xī shōu biānExample:It also showed that the optical abso...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

absorption index

    Definition: A measure of the attenuation caused by absorption of energy per unit of distancethat occurs in an electromagnetic wave of given wavelength propagating in a material medium ofgiven refractive index.吸收指數(shù)xī shōu zhǐ shùExample:When salinity of fo...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

absorption

    Definition: (Chemistry) Absorption is a physical or chemical phenomenon or a process inwhich atoms,molecules,or ions enter some bulk phase-gas,liquid or solid material. This is adifferent process from adsorption,since molecules undergoing absorption are t...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

affine mapping

    Definition: An affine mapping is any mapping that preserves collinearity and ratios ofdistances: if three points belong to the same straight line,their images under an affinetransformation also belong to the same line.仿射映射fǎng shè yìng shèExample:Its char...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

albite twin law

    Definition: It is a rule specifying the orientation of alternating lamellae in multiple twinfeldspar crystals; the twinning plane is brachypinacoid and is common in albite.鈉長石雙晶律nà cháng shí shuāng jīng lǜalbite: a widely distributed rock-forming feldspar...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

amorphous substance

    Definition: An amorphous substance is something that has a random molecular formation inits natural form (when solidified). The opposite would be semi-cristaline which has randommolecular structure when heated but returns to an organised uniform state whe...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

anisotropic body

    Definition: objects of which optical properties vary with respect to direction各向異性體gèxiàng yì xìng tǐanisotropic: not invariant with respect to direction各向異性的gè xiàng yì xìng debody: an individual 3-dimensional object that has mass and that is distinguish...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語

anomalous absorption

    Definition: Anomalous absorption is absorption that takes place when radiation isdynamically diffracted by a perfect or nearly perfect crystal.反常吸收fǎn cháng xī shōuanomalous: inconsistent with or deviating from what is usual,normal,or expected反常fǎnchángEx...[繼續(xù)閱讀]

礦物學(xué)專業(yè)術(shù)語