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[计] differential quotient
双语例句
1
采用方向微商和方向差商讨论有限点方法,建立各阶各方向微商间的关系式。
Fundamentals of the method are established by means of directional differentials and directional differences.
2
在别的坐标系中,它除了包含对时间的二阶微商外,还可能会包含对时间的一阶微商。
In other coordinates it will involve second and possibly first derivatives with respect to time.
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