fix as基础版。

strategy/src/strategy.rs

@@ -467,8 +467,8 @@ impl Strategy {
         predictor.optimal_ask_price = utils::fix_price(predictor.optimal_ask_price, self.tick_size);
         predictor.optimal_bid_price = utils::fix_price(predictor.optimal_bid_price, self.tick_size);
 
-        let delta_ask = predictor.ask_delta.clone();
-        let delta_bid = predictor.ask_delta.clone();
+        let delta_ask = predictor.delta_ask.clone();
+        let delta_bid = predictor.delta_bid.clone();
 
         // 开仓相关
         let avoid_ask = min(dec!(0.001), (delta_ask / predictor.mid_price) * dec!(0.1));