superpositions
英
[sjuːpəpə'zɪʃənz]
美
[sjuːpəpə'zɪʃənz]
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名词 superposition:
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(geology) the deposition of one geological stratum on another
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(geology) the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest
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(geometry) the placement of one object ideally in the position of another one in order to show that the two coincide
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the placement of one thing on top of another
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