他现在把变量叫做流,变量的变化率叫做流数.He now called a varrable quantity a fluent and its rate of change , the fluxion.于是, 在正常点火时,叶片温度的变化率约为30度/秒.Thus, during a normal light-up the temperature charge rate on the blade is about 30 degrees/...

“变化率”的英语可以翻译为：change rate，rate of change，variance ratio ...