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单词 conchoidal
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Examples ofconchoidal

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The dry samples of this facies give a soapy feel and are brittle, havingconchoidal-like fractures.
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Deposits of this type show no internal structure and, where exposed, weathered surfaces have aconchoidalfracture.
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Pezzottiate is brittle with aconchoidalto irregular fracture, and streaks white.
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Charoite is strictly massive in nature, and fractures areconchoidal.
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The mineral is very brittle, and breaks with aconchoidalfracture.
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The mineral is brittle, with an uneven toconchoidalfracture.
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Conchoidalfracture describes the way in which materials break when they do not follow the natural planes of separation.
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As these materials lack natural planes of separation,conchoidalfractures occur when they are struck with sufficient force.
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This produces microscopicconchoidalfractures as the abrasive rolls about between the two surfaces and removes material from both.
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Djurleite is brittle, with aconchoidal(shell-like) fracture.
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It crystallizes in the trigonal - rhombohedral system and has a white vitreous appearance with aconchoidalfracture.
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Vlasovite is a brittle mineral, with an irregular toconchoidalfracture, hardness 6 and specific gravity 2.97.
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In amorphous solids, by contrast, the lack of a crystalline structure results in aconchoidalfracture, with cracks proceeding normal to the applied tension.
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It is very brittle, and has aconchoidalfracture.
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It is a volcanic glass with aconchoidalfracture (like glass), a resinous lustre, or silky in some cases, and a variable composition.
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Conchoidalfracture leaves behind very sharp edges when pieces of the rock are sheared off.
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Vanadinite is very brittle, producing small,conchoidalfragments when fractured.
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It has a vitreous luster and aconchoidalto uneven fracture.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

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更新时间:2025/1/19 3:07:05