毛笔分为硬毫、软毫、兼毫三种。
Writing brush has three varieties: rigidity brush, flexible brush and doubled both brush.
纸浆的大量200毫米低音单元是用于两个25毫米软球顶磁液冷却的功能和额外的可靠性电子过载保护高音。
The substantial 200mm pulp cone woofer is used with two 25mm soft dome tweeters which feature Ferrofluid cooling and electronic overload protection for extra reliability.
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