| 词汇 | conchoidal |
| 释义 | BETA Examples of conchoidalconchoidal isn’t in the Cambridge Dictionary yet. You can help! The dry samples of this facies give a soapy feel and are brittle, having conchoidal-like fractures. Deposits of this type show no internal structure and, where exposed, weathered surfaces have a conchoidal fracture. Pezzottiate is brittle with a conchoidal to irregular fracture, and streaks white. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Charoite is strictly massive in nature, and fractures are conchoidal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The mineral is very brittle, and breaks with a conchoidal fracture. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The mineral is brittle, with an uneven to conchoidal fracture. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Conchoidal fracture describes the way in which materials break when they do not follow the natural planes of separation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As these materials lack natural planes of separation, conchoidal fractures occur when they are struck with sufficient force. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This produces microscopic conchoidal fractures as the abrasive rolls about between the two surfaces and removes material from both. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Djurleite is brittle, with a conchoidal (shell-like) fracture. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It crystallizes in the trigonal - rhombohedral system and has a white vitreous appearance with a conchoidal fracture. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Vlasovite is a brittle mineral, with an irregular to conchoidal fracture, hardness 6 and specific gravity 2.97. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In amorphous solids, by contrast, the lack of a crystalline structure results in a conchoidal fracture, with cracks proceeding normal to the applied tension. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is very brittle, and has a conchoidal fracture. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a volcanic glass with a conchoidal fracture (like glass), a resinous lustre, or silky in some cases, and a variable composition. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Conchoidal fracture leaves behind very sharp edges when pieces of the rock are sheared off. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Vanadinite is very brittle, producing small, conchoidal fragments when fractured. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has a vitreous luster and a conchoidal to uneven fracture. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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