1. Channel is the main sediment conduit and deposition area.From updip to downdip area, the sinuosity of channel increases and the flow energy decreases.
   深水河流是物源的根本短信通道和沉淀的根本經營場所，從長江上游至河流下游河流回彎度增強，能力慢慢地變弱。
2. The sinuosity or sinuosity ratio of a stream is expressed as the ratio of the length along the center line of the stream to the length along the valley.
   一件河道的變形率或變形比，是以沿該河平臺線與沿其河谷的長度之比來說明的。