So it's important in controlling the powder delivery amount.

因而控制送粉量的稳定性、连续性极其重要。

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The amount of time between order placement and delivery is too long.

订单处理和订单发送之间的时间间隔太长。

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The amount of time between order placement and delivery is too long.

订单处理和订单发送之间的时间间隔太长。

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