dearBetty wrote:像這樣有陡到吧文章請...(恕刪)
dearBetty wrote:像這樣有陡到吧
Jetter wrote:45度角的坡爬昇率是100%.........(恕刪)
KWSB wrote:100%是90度.4...(恕刪)
KWSB wrote:100%是90度.45度是50%....(恕刪)