短语词组短語incremental payoff 增量收入scientific payoff 科研成果manpower payoff 人力支付payoff expected 支付期望Payoff schedule 融工具各有特性payoff asymmetry 報償不對稱payoff pitch 二擊三球後的投球Need Payoff 需求rotary payoff 鏇轉放線裝置payoff function 支付函數 返回 payoff