When feedback from various operating units arrives, any forecast should be reviewed in the light of changing circumstances.
任何预测必须在各业务单位的情况反馈回来后，根据环境的变化重新考虑。
Delphi method is a kind of dependable and visual forecast method with anonymity and feedback.
德尔菲方法是一种可靠的、直观的预测方法，具有匿名性、反馈性等特点。
This kind of methods is also called as undulation forecast subtracting, which including wave field extrapolated method, feedback loop method and backscattering progression method.
这类方法也称为波动预测减去法，主要有：波场外推法、反馈环法、反散射级数法。
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