毛笔一种。用鼠须、猪鬃制成。这种笔弹性强，容易上手，写字锐利，点画瘦劲。宜书写小楷和国画的线条勾、描等。 硬毫包括紫毫、狼毫、鼠毫。 毛笔还包括：软毫（羊毫）
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.
RealView公司生产的内窥镜胶囊核心是一个25毫米长、直径7.5毫米的硬塑料圆柱体。
The core of RealView's endoscopy capsule is a hard plastic cylinder 25mm long and 7.5mm in diameter.
整体钻头：适用于玻璃、陶瓷等硬脆材料的钻孔。直径由4 - 200毫米。
Diamond unitary drills: Use for drilling hard and brickle material, such as glass, ceramics etc. Dia 4-200mm.
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