A trailing limit if touched order is entered on the same side of the market as a limit order. This order will initially be set at a price level that is favorable to the current market. As the market moves away from the initial trigger price, the user defined trailing amount and limit offset amount will adjust the trigger price and the limit price to follow the market. If the initial market movement is in a favorable direction and reaches the initial trigger price, the order will be triggered and submitted as a limit order. If the market moves in an unfavorable direction, the order will trail the market movement and will trigger only if there is retracement by the defined trailing amount (for falling markets, retracement is when the market declines followed by an increase to levels previously traded; for rising markets, retracement is when the market rises followed by a decrease to levels previously traded).
触及追踪限价单与限价单在市场同一侧下单。该订单的初始价格水平将有利于当前市场。随着市场偏离初始触发价，用户定义的追踪金额和限价抵消金额将调整触发价和限价，使其跟随市场走势。如果初始市场走势有利并达到初始触发价，则订单将被触发并以限价单形式提交。如果市场走势不利，订单将追踪市场走势，并且仅在出现定义的追踪金额回撤时才会触发（对于下跌市场，回撤是指市场下跌后回升至先前交易的水平；对于上涨市场，回撤是指市场上涨后回落至先前交易的水平）。

Buy Order  买入订单

A buy trailing limit if touched order moves with the market price, and continually recalculates the trigger price at a fixed amount below the market price, based on the user-defined "trailing" amount. A trailing limit if touched order is similar to a trailing stop limit order, except that the buy order sets the initial stop price at a fixed amount below the market price instead of above. As the market price rises, the trigger price rises by the user-defined trailing amount, but if the price falls, the trigger price remains the same. When the trigger price is touched, a limit order is submitted.
触及追踪限价买单会随市价波动，并根据用户设定的“追踪”金额，不断重新计算触发价，使其低于市价一个固定的金额。触及追踪限价买单类似于追踪止损限价买单，不同之处在于，买单将初始止损价设置为低于市价一个固定的金额，而不是高于市价一个固定的金额。当市价上涨时，触发价会上涨用户设定的追踪金额，但如果市价下跌，触发价保持不变。当触发价被触及时，系统会提交限价单。

Sell Order  卖单

A sell trailing limit if touched order moves with the market price, and continually recalculates the trigger price at a fixed amount above the market price, based on the user-defined "trailing" amount. A trailing limit if touched order is similar to a trailing stop limit order, except that the sell order sets the initial stop price at a fixed amount above the market price instead of below. As the market price falls, the trigger price falls by the user-defined trailing amount, but if the price rises, the trigger price remains the same. When the trigger price is touched, a limit order is submitted.
触及追踪限价卖单会随市价波动，并根据用户设定的“追踪”金额，不断重新计算触发价，使其高于市价一个固定的金额。触及追踪限价卖单与追踪止损限价卖单类似，不同之处在于，卖单将初始止损价设定为高于市价一个固定的金额，而不是低于市价一个固定的金额。当市价下跌时，触发价会下跌用户设定的追踪金额，但如果市价上涨，触发价保持不变。当触发价被触及时，系统会提交限价单。

Example  例子

Order Type In Depth - Trailing Limit if Touched Buy Order
订单类型详解 - 触及追踪限价买单