There are 3 types of estimates according to the accuracy of estimate: order-of-magnitude estimate, budget estimate and definitive estimate.
按照估算的精确度范围可以将估算分为3大类，量级估算、预算估算和确定性估算。
There are 3 types of estimates according to the accuracy of estimate: order-of-magnitude estimate, budget estimate and definitive estimate.
按照估算的精确度范围可以将估算分为3大类，量级估算、预算估算和确定性估算。
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