刷毛和刷柄部分都使用了食用级别的材料注塑而成，使用起来更耐用和更安全。
Bristles and brush handles are made of food grade materials that are more durable and safer to use.
机头外壳、机头上盖和手柄是注塑而成的。机头由机头外壳、机头上盖、转子芯和滑动轴承组成。转子芯由注塑涡轮、车针和垫圈组成。
The said head consists of casing, top cover, rotor core and sliding bearing and the said rotor core is composed of moulded turbine, needle and ring cushion.
箱子采用注塑成型的聚碳酸酯复合材料制造而成，该材料与汽车保险杠的制造材料相同，可提供很好的防撞保护。
The suitcase is made from injection molded polycarbonate composite — the same material used in automobile bumpers — that provides superior impact protection.
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