evelite

这些基本元件存在于所有机械硬件设备中，形状各异，大小不一，不过现在的市场上还是模块化的部件更具竞争优势。工厂和制造商将这些部件拿来组装为成品，然后再在市场出售。

These basic elements of all mechanical hardware can come in virtually any shape and size, although composite or modular functionality is highly advantageous in today's competitive market. Factories and manufacturers take these parts and assemble them into finished products, which are then sold on the market.