有效层厚指在外延片制造中载流子密度在规定范围内的硅锭前端的深度
The effective layer thickness refers to the depth at the front end of the silicon ingot where the carrier density is within the specified range during the manufacturing of epitaxial wafers
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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