欧美成人三级_九色在线视频_视频一区在线播放_亚洲一级一级97网_亚洲最大的免费视频网站_幼a在线观看_国产美女av

編輯此資訊 : Recumbent bicycle - How to DIY a recumbent bike?

推廣資訊

分類目錄: *

信息類型: *

公司庫品牌庫產品庫供應信息求購信息服務項目解決方案業界資訊新聞事件展會情報名詞解釋知識庫文章招聘信息網址連接圖片庫資料下載創業加盟招商合作促銷活動其它信息

標題: *

詳細內容: *

Recumbents can be categorized by their wheelbase, wheel sizes, steering system, faired or unfaired, and front-wheel or rear-wheel drive. A recumbent bicycle is a bicycle that places the rider in a laid-back reclining position. Most recumbent riders choose this type of design for ergonomic reasons; the rider's weight is distributed comfortably over a larger area, supported by back and buttocks. On a traditional upright bicycle, the body weight rests entirely on a small portion of the sit bones, the feet, and the hands. Most recumbent models also have an aerodynamic advantage; the reclined, legs-forward position of the rider’s body presents a smaller frontal profile. A recumbent holds the world speed record for a bicycle, and they were banned from international racing in 1934. Recumbents are available in a wide range of configurations, including: long to short wheelbase; large, small, or a mix of wheel sizes; overseat, underseat, or no-hands steering; and rear wheel or front wheel drive. A variant with three wheels is a recumbent tricycle. How to DIY a recumbent bike? http://www.swkong.com/i/recumbent.html

上傳圖片:

* (jpg , gif , png) format

聯繫人信息

姓名: *

電子信箱: *

手機:

公司名稱:

聯繫電話:

詳細地址:

郵遞區號:

網址URL:

其他

關鍵字:

有效期:

* 天

管理密碼:*

* 刪除/修改

更換密碼:

* 如有必要，可重新設置新的管理密碼

刪除此資訊

*