| 摘要 |
A ceramic shell is disclosed. The ceramic shell can be used, for example, in an an-nor device or system. The ceramic shell includes two or more of an upper portion, a curved portion, and a seat portion. At least one of the upper portion, the curved portion, and the seat portion includes at least one of a first side portion and a second side portion. The at least of one the first side portion and the second side portion extends forward and includes at least one curved surface. The at least one of the first side portion and the second side portion is monolithically connected to at least one of the upper portion, the curved portion, and the seat portion.
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