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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.
youdao
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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.
youdao