如果你体型正常，以中等速度骑车的话，每小时可消耗550卡路里。
If you're of average size and pedaling at a moderate pace, you can burn around 550 calories per hour.
要实现等速，必须以某种方式安装第二个万向节，这样第一个万向节使转速增大，第二个万向节就使转速减少。
A constant rotational speed can be restored by fitting a second joint in a way such that when the first joint increases its speed the second joint decreases its speed.
以稀土异戊橡胶的凝聚为例，建立了等速凝聚阶段和减速凝聚阶段的动力学模型。
Kinetic models were established for the constant and drop rate stages of coagulation process by using rare-earth catalyzed polyisoprene rubber solution as an instance.
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