专业类 meaning in English

professional

Clay bars should only be used by professionals
研磨泥只适用于专业类产品吗？
Another example is our professional line of products
另一个例子就是我们的专业类产品。
Ta 4 digital audio interface - part 4 : professional applications
数字音频接口.第4部分:专业类用途
Ta 4 digital audio interface - part 4 : professional applications
数字音频接口.第4部分:专业类用途
Basic education courses reform and reorientation of teachers ' education training aim
小教本科师范教育专业类课程教学改革谈

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