论文部分内容阅读
自行车是不少家庭都备有的交通工具。但你是否知道:自行车三角架上标的“QE—16”是什么意思?“QF—65”又是什么意思? 一、自行车的种类划分按车架结构可分为男式和女式两种: 按车轮直径可分为710(28″)、660(26″)、610(24″)和510(20″)mm等几种: 按前后闸型式,可分为普通闸、钳形闸和涨闸等几种; 按变速结构,可分为单速、双速和多速几种; 按用途,可分为: 1.普通型:结构坚固,骑行平稳,轻快舒适,可适量载重。
Bicycles are a transport that many families have. But do you know: bicycle tripod superscript “QE-16” What does it mean? “QF-65” What does it mean? First, the type of bicycle by frame structure can be divided into two types of men and women: According to the wheel diameter can be divided into 710 (28 “), 660 (26”), 610 (24 “) and 510 (20”) mm and so on: According to front and rear gate type can be divided into ordinary gate, Brake and so on; by variable speed structure, can be divided into single speed, double speed and multi-speed several; According to use, can be divided into: 1. Ordinary type: solid structure, stable ride, light and comfortable, suitable load.